DjsBlog: Index

H o M e

David Jones MVP

Jekyll : Layouts as a Template
April 16, 2022 23:17 David Jones MVP web jekyll layout frontmatter template data
Using a high level Layout as a template that makes use of FronmtMatter metadata of a post for layed out content in the template. More ...

Grove Beginners kit : Arduino Lesson 4 The Buzzer
April 15, 2022 18:23 David Jones MVP ardgrove arduino grove
Make the buzzer sound by sending an oscillating signal to it. More ...

Grove Beginners kit : Arduino Lesson 3 Rotary dial controlling the Blink Frequency
April 14, 2022 18:23 David Jones MVP ardgrove arduino grove
This lesson introduces Analog to Digital conversion. The LED flash rate is controlled by the Rotary Potentiometer. More ...

Grove Beginners kit : Arduino Lesson 2 Press Button
April 13, 2022 18:23 David Jones MVP ardgrove arduino grove
This extends the previous lesson by adding a button to control the LED’s state. More ...

Grove Beginners kit : Arduino Lesson 1b Download program to board
April 12, 2022 18:23 David Jones MVP ardgrove arduino grove
How to download a program from CodeCraft UI to the Grove Beginners Kit for Arduino. More ...

Grove Beginners kit : Arduino Lesson 1a Flashing LED
April 11, 2022 18:23 David Jones MVP ardgrove arduino grove
Using the Grove Beginner Kit for Arduino with CodeCraft to make an LED flash. Includes how-to “blocky-program” the code using CodeCraft. More ...

C# Async Threading in Console Apps
March 30, 2022 04:49 David Jones MVP coding threading async csharp dotnet
With a Console app that has async methods, it’s important to not have a situation where the app completes before these async threads complete. A sorry tail of what not to do! More ...

Google Home Windows Bridge : To Azure IoTHub
March 24, 2022 17:23 David Jones MVP iot google triggercmd dotnet iot iothub azure
And now for the Google Nest getting telemetry from an IoT Hub using a vocal request, and enunciating the result. More ...

Jekyll : Embed Videos
March 23, 2022 12:21 David Jones MVP web video youtube jekyll
Embedding a Youtube video in a Jekyll blog post rather than just linking to it: 2 Solutions. Also displaying raw Jekyll code on a page as well as redirecting from http to https. More ...

Google Home Windows Bridge : GPIO Hardware
March 22, 2022 13:44 David Jones MVP iot google triggercmd dotnet iot nuget
Circuits for DNETCoreGPIO on RPi More ...

Google Home Windows Bridge : Update on DNETCoreGPIO
March 21, 2022 22:49 David Jones MVP iot google triggercmd dotnet iot nuget
The DNETCoreGPIO repository has been further refined and extended with increased focus upon creating the app as a simple Console app that uses the package directly. More ...

Nuget Packages 101 : Including a README
March 02, 2022 15:52 David Jones MVP coding dotnet nuget readme
When you publish a Nuget package there are two ways to include a README file. You can author one on Nuget when uploaded or include one in the package. This covers the inclusion. More ...

Nuget Packages 101 : Packaging a Console App
March 01, 2022 20:22 David Jones MVP coding dotnet nuget console
A .NET Console app project can be easily modified to be a library that packages up its functionality so that it can be published on Nuget. It is then a simple matter to create a Console app, on any .NET platform, that uses the package and use the functionality there. More ...

Google Home Windows Bridge : An approach to Hardware
February 27, 2022 18:27 David Jones MVP iot google triggercmd dotnet iot
Controlling .NET hardware on a RPi using Google Home voice commands. More ...

Google Home Windows Bridge : Using Google Home
February 27, 2022 16:46 David Jones MVP iot google triggercmd dotnet iot
And now for something not quite completely different … With apologies to Monty Python. A bridge between Google Home and Azure IoT Hub! But first, get started with Google Home. More ...

Google Home Windows Bridge : TRIGGERcmd
February 25, 2022 17:49 David Jones MVP iot google triggercmd dotnet iot json
A bridge between Google Home and Windows Embedded devices and Azure IoTHub. More ...

Blazor Helpers App Twilio : Mobile Number Check
February 24, 2022 15:07 David Jones MVP twilio blazor csharp blazor-server sms twilio mobilenumber
Explicit verification of a mobile number before it is used to send SMS. More ...

Meltdown : A simple Markup language.
January 07, 2022 20:37 David Jones MVP web markup markdown email blazor csharp
Meltdown is a text markup parser that is meant as a simple alternative to Markup for novice users. More ...

Meltdown : Addendum Recoding for Version 2.1
December 18, 2021 14:22 David Jones MVP web markup markdown email blazor csharp
Nothing new functionally here for Meltdown. This is an in depth discussion of the coding for version 2.1 of the Meltdown parser. More ...

Meltdown : Send Mail and Nuget Package
December 01, 2021 16:58 David Jones MVP web markup markdown email blazor csharp nuget
The focus of Meltdown is to make easy to add Markup capability to a C# web mail app. Meltdown now contains a method for sending email using System.Net.Mail and has been added as a page to the Blazor test app. Also, the Meltdown library has been packaged and published as a Nuget package. More ...

Meltdown : CS201 Exrecises
November 30, 2021 17:14 David Jones MVP web markup markdown email blazor csharp
A set of programming questions for a 201 level Computer Science Student that reflect the programming used in developing the Meltdown parser. More ...

Meltdown : Coding
November 29, 2021 20:32 David Jones MVP web markup markdown email blazor csharp
The previous posts on Meltdown, hopefully demonstrate that it is easy to generate an email message that only requires basic formatting, that is HTML formatted . Surely far simpler that writing the message directly using HTML tags and somewhat simpler for simple formatting than Markdown. That was the first “acid test”. But what about simplicity with coding of a Meltdown to HTML parser for a 201 level student ? The conclusion is that a Meltdown parser for most functionality is easy to code but some functionality is a little more complex when trying to “dot the Is and cross the Ts”. More ...

Meltdown : Blazor Test App
November 27, 2021 17:16 David Jones MVP web markup markdown email blazor csharp
A simple to code and use line based Markup language making much use of brackets within a line and with start of line monikers for whole of line impact: A test Blazor App. You can directly enter Meltdown text or try some samples. You see thge generated HTML and it rendered. More ...

Meltdown : Console Test App
November 26, 2021 17:16 David Jones MVP web markup markdown email blazor csharp
A simple to code and use line based Markup language making much use of brackets within a line and with start of line monikers for whole of line impact: A test console app that inputs some sample Meltdown text and shows the generated HTML code. More ...

Meltdown : Schema
November 25, 2021 17:16 David Jones MVP web markup markdown email blazor csharp
A simple to code and use line based Markup language making much use of brackets within a line and with start of line monikers for whole of line impact: The Meltdown Parse Schema. More ...

Meltdown : Intro - A Simple Markup Parser
November 24, 2021 17:16 David Jones MVP web markup markdown email blazor csharp
A simple to code and use line based Markup language making much use of brackets within a line and with start of line monikers for whole of line impact. More ...

Blazor-IoT : An Azure IoT Bridge via Blazor
October 16, 2021 17:29 David Jones MVP iot iot iothub blazor rpi azure csharp arduino
A Blazor app that acts as a go-between an IoT Device and Azure IoT Hub. Blazor receives telemetry from a device over Http which it then forwards to teh IoT Hub. Commands can be forwarded back to the device from the hub via the Blazor app. There is also a command line app that can get telemetry over a serial port and forward this to Blazor. This has been implemented for Arduino devices that have no WiFi/Ethernet. The take-homes are tha the devices don’t need to store hub credentials nor implement the Azure IoT Device SDK, and simple devices don’t need networking to be able to submit telemetry. More ...

Grove Beginner Kit For Arduino : The Cloud
August 20, 2021 19:01 David Jones MVP ardrpi arduino iothub azure
And finally, sending telemetry to an Azure IoT Hub. More ...

Grove Beginner Kit For Arduino : Codecraft Lesson 10 - Sensing-movement
August 19, 2021 23:01 David Jones MVP ardrpi arduino
Reading and responding to the triaxial accelerometer. THIS LESSON DOES NOT WORK AS THE CODECRAFT 3 AXIS SENSOR COMPONENT IS NOT THE ONE IN THE BEGINNERS KIT. More ...

Grove Beginner Kit For Arduino : Codecraft Lesson 9 - Measuring Surrounding Air Pressure
August 19, 2021 19:01 David Jones MVP ardrpi arduino
Read the temperature and air pressure sensor (BMP280). This page hasn’t been converted to Blocky style yet. More ...

Grove Beginner Kit For Arduino : Codecraft Lesson 8 - Detecting Surrounding Temperature & Humidity
August 19, 2021 19:01 David Jones MVP ardrpi arduino
Read the temperature-pressure sensor (DHT11). This page hasn’t been converted to Blocky style yet. More ...

Grove Beginner Kit For Arduino : Codecraft Lesson 7 - Displaying Data on an OLED
August 19, 2021 19:01 David Jones MVP ardrpi arduino
Use of the OLED display ad I2C. Includes the use of Arduino libraries. More ...

Grove Beginner Kit For Arduino : Codecraft Lesson 6 - Sound Sensitive LED Light
August 19, 2021 19:01 David Jones MVP ardrpi arduino
Determining the intensity of sound to turn an LED on/off. This page hasn’t been converted to Blocky style yet. More ...

Grove Beginner Kit For Arduino : Codecraft Lesson 5 - Light Intensity
August 19, 2021 19:01 David Jones MVP ardrpi arduino
Using an LDR sensor to determine the light intensity and turning the LED off/on depending upon the level. More ...

Grove Beginner Kit For Arduino : Codecraft Lesson 4 - Making the Buzzer go BEEP
August 19, 2021 19:01 David Jones MVP ardrpi arduino
Controlling the buzzer by sending an oscillating digital signal to it, like the flashing LED. The signal used for the (passive) buzzer is PWM. More ...

Grove Beginner Kit For Arduino : Codecraft Lesson 3 - Controlling the Frequency of the Blink
August 19, 2021 19:01 David Jones MVP ardrpi arduino
This lesson introduces Analog to Digital conversion. The LED flash rate is controlled by the Rotary Potentiometer. More ...

Grove Beginner Kit For Arduino : Codecraft Lesson 2 - Pressing Button to light up LED
August 19, 2021 19:01 David Jones MVP ardrpi arduino
This extends the previous lesson by adding a button to control the LED’s state. More ...

Grove Beginner Kit For Arduino : Download program to board
August 18, 2021 20:01 David Jones MVP ardrpi arduino
How to download a program from CodeCraft UI to the Grove Beginners Kit for Arduino More ...

Grove Beginner Kit For Arduino : Codecraft Lesson 1 - Flashing LED
August 18, 2021 19:01 David Jones MVP ardrpi arduino
Using the Grove Beginner Kit for Arduino with CodeCraft to make an LED flash. Includes how-to “blocky-program” the lesson in CodeCraft.. More ...

Grove Beginner Kit For Arduino : Setup
August 17, 2021 10:01 David Jones MVP ardrpi arduino
More informaton. More ...

Grove Beginner Kit For Arduino : The Hardware
August 16, 2021 19:01 David Jones MVP ardrpi arduino
About the Grove Beginners Kit for Arduino Hradware.. More ...

Grove Beginner Kit For Arduino : Plug and play unboxing
August 15, 2021 10:01 David Jones MVP ardrpi arduino
About the demo app on the the Gove Beginners Kit that runs first time it is launched.. More ...

Grove Beginner Kit For Arduino : Install Codecraft
August 13, 2021 19:01 David Jones MVP ardrpi arduino
You can use CodeCraft in a web browser or install the app locally. This page covers the installation. More ...

Grove Beginner Kit For Arduino : Codecraft Intro and Index
August 13, 2021 10:01 David Jones MVP ardrpi arduino
The Grove Beginner Kit For Arduino includes an Arduino Uno board with preconnected devices. The lessons supporting this present coding using the Arduino IDE. These pages present the same lessons using the Codecraft IDE that uses the Blocky style of coding with specific Grove Arduino blocks. More ...

Blazor Helpers App Members : 8. Search based upon BIB No. or Name
August 10, 2021 17:20 David Jones MVP blazor blazor entity-framework csharp blazor-server telerik
A page for finding a member’s name based upon their BIB No (registration number). Uses Telerik ComboBoxes. Is double ended in that can search also for BIB No using athlete’s name or part thereof. More ...

Redirect to Grove Beginners Kit for Arduino : Lesson 10
July 20, 2021 15:22 David Jones MVP aka aka
Redirect to Grove Beginners Kit for Arduino Lesson 10 More ...

Redirect to Grove Beginners Kit for Arduino : Lesson 9
July 20, 2021 15:22 David Jones MVP aka aka
Redirect to Grove Beginners Kit for Arduino Lesson 9 More ...

Redirect to Grove Beginners Kit for Arduino : Lesson 8
July 20, 2021 15:22 David Jones MVP aka aka
Redirect to Grove Beginners Kit for Arduino Lesson 8 More ...

Redirect to Grove Beginners Kit for Arduino : Lesson 7
July 20, 2021 15:22 David Jones MVP aka aka
Redirect to Grove Beginners Kit for Arduino Lesson 7 More ...

Redirect to Grove Beginners Kit for Arduino : Lesson 6
July 20, 2021 15:22 David Jones MVP aka aka
Redirect to Grove Beginners Kit for Arduino Lesson 6 More ...

Redirect to Grove Beginners Kit for Arduino : Lesson 5
July 20, 2021 15:22 David Jones MVP aka aka
Redirect to Grove Beginners Kit for Arduino Lesson 5 More ...

Redirect to Grove Beginners Kit for Arduino : Lesson 4
July 20, 2021 15:22 David Jones MVP aka aka
Redirect to Grove Beginners Kit for Arduino Lesson 4 More ...

Redirect to Grove Beginners Kit for Arduino : Lesson 3
July 20, 2021 15:22 David Jones MVP aka aka
Redirect to Grove Beginners Kit for Arduino Lesson 3 More ...

Redirect to Grove Beginners Kit for Arduino : Lesson 2
July 20, 2021 15:22 David Jones MVP aka aka
Redirect to Grove Beginners Kit for Arduino Lesson 2 More ...

Redirect to Grove Beginners Kit for Arduino : Lesson 1
July 20, 2021 15:22 David Jones MVP aka aka
Redirect to Grove Beginners Kit for Arduino Lesson 1 More ...

Blazor Helpers App Members : 7. async EF calls from an Entity Property
July 14, 2021 17:37 David Jones MVP blazor blazor entity-framework csharp blazor-server
Updating a class property value is synchronous code and therefore any consequential async awaited calls can be an issue. The recommended workaround is to implement OnPropertyChanged event for the class. Alternatively you can use StateHasChanged() in Blazor code to get around, for example, making async Entity Framework calls in synchronous code. More ...

Blazor Helpers App Members : 6. A Recursive Entity Group Property - Team Leader
June 30, 2021 23:21 David Jones MVP blazor blazor entity-framework csharp blazor-server
Handling a Recursive entity property with Entity Framework Core. More ...

Blazor Helpers App Members : 5. Many to Many Entity Relationships
June 10, 2021 20:25 David Jones MVP blazor blazor entity-framework csharp blazor-server
With Code-First, to get Entity Framework to generate the scaffolding for when one entity requires a list of another, both entities require a list of the other as a property. When the new migration is added a secondary table that joins both is generated. This simplifies some of the explicit coding for group membership covered in some of the previous posts in this series. More ...

Blazor Helpers App Members : 4. Members Table - AddNewMember Code
June 10, 2021 00:15 David Jones MVP blazor blazor entity-framework csharp blazor-server
The complete code for the AddMemberviaCSV() method. More ...

Blazor Helpers App members : 3. Some Reflection with the Members Table
June 09, 2021 20:44 David Jones MVP blazor blazor entity-framework csharp blazor-server
Using Reflection when parsing a Csv file to generically write entity property values to a Members table in an Azure SQL database using Entity Framework Core. More ...

Blazor Helpers App Members : 2. Nuances with adding a Members Table
June 09, 2021 20:43 David Jones MVP blazor blazor entity-framework csharp blazor-server
Some issues that arose when adding a Members table to an existing Blazor app when the data is provided as a CSV file. More ...

Blazor Helpers App Members : 1. Overview of adding a Members Table
June 09, 2021 20:42 David Jones MVP blazor blazor entity-framework csharp blazor-server
The Helpers app, as previously covered in posts here, has been extended to include a Members table. This includes uploading new members from a Csv file as well as for updating existing members, using Entity Framework Core. More ...

Jekyll : Redirect http to https
May 19, 2021 15:48 David Jones MVP web jekyll html links redirect htaccess javascript
Simple redirect of http URLS to https in Jekyll/Markdown using Javascript code. More ...

Azure Static Web Apps : General Availability May 12 2021
May 13, 2021 23:02 David Jones MVP web web azure-static-webapp azure-functions
Azure Static Web Apps can now be deployed to Azure in production ready mode as Az SWA have gone GA. There is still a Free plan but now there is the Standard pan which includes such things as BYO Functions, and SLA as well as other new options and increased limits. More ...

Azure Static Web App : A Simple Static Content App
April 21, 2021 12:38 David Jones MVP web web blazor azure-static-webapp csharp
The Azure Static Web App template with a bit of filtering, provides a quick-and-dirty way to get some fixed content up online on Azure using GitHub Actions. In this example, some signs at a sports ground were turned into Blazor pages by photographing them and including them on razor pages directly as images. More ...

An Azure Static Web App with EF : Posts in this series
April 19, 2021 16:39 David Jones MVP web ef
An index to the four posts about SWA and EF More ...

An Azure Static Web App with EF : 4. Cascade and SetNull Deletions
April 18, 2021 16:27 David Jones MVP web web blazor azure-static-webapp csharp entity-framework-core cascade-delete
Implements EF Cascade Delete for a required entity property and EF SetNull for an optional entity property. More ...

An Azure Static Web App with EF : 3. Entity Framework Core Implementation
April 17, 2021 16:56 David Jones MVP web web blazor azure-static-webapp csharp entity-framework-core
Code First Entity Framework core with full CRUD activity was used as the backend database in a C# Azure Function, with a Blazor WASM Web App. This replaced the use of LocalStorage as per a previous post which in turn replaced static app data. More ...

An Azure Static Web App with EF : 2. Index of the Repository
April 16, 2021 18:34 David Jones MVP web web blazor azure-static-webapp csharp entity-framework-core
An Azure Static Web App was developed by extending the tutorial on that topic to contain 3 editable entities mimicking a database with a view to extending to use EF with an Azure SQL database. Each milestone was noted as a separate branch of the repository. This post is an idex to those branches in chronological order. More ...

An Azure Static Web App with EF : 1. Multiple Entities and LocalStorage
April 15, 2021 18:34 David Jones MVP web web blazor azure-static-webapp csharp entity-framework-core
An Azure Static Web App was developed by extending the tutorial on that topic to contain 3 editable entities mimicking a database with a view to extending to use EF with an Azure SQL database. More ...

Blazor Helpers App : EF Core Tutorial
March 14, 2021 23:13 David Jones MVP blazor blazor entity-framework csharp blazor-server code-first
A tutorial on using Entity Framework Core based upon the two sample Blazor apps previously presnted here. More ...

Blazor Helpers App : Two Sample Apps
March 10, 2021 15:18 David Jones MVP blazor blazor entity-framework csharp blazor-server code-first
Whilst not making the app source code public, there are now two apps that demonstrate the Entity Framework Core functionality as used in the app. One a Blazor Server (only) and the other a port of that to a Blazor Wasm app. More ...

Blazor Helpers App Twilio : Onforwarding SMS
February 14, 2021 18:56 David Jones MVP twilio blazor csharp blazor-server sms twilio
Forwarding a deciphered Y/N response to Admin as an SMS message using Twilio. More ...

Blazor Helpers App Twilio : Receiving SMS
February 14, 2021 18:55 David Jones MVP twilio blazor csharp blazor-server sms twilio
Receiving confirmation replies for volunteered tasks via SMS using Twilio. Includes deciphering the response into a Yes or No. More ...

Blazor Helpers App Twilio : Sending SMS
February 14, 2021 18:54 David Jones MVP twilio blazor csharp blazor-server sms twilio
An outline of getting started with sending request for confirmation SMS messages from Blazor based upon a database of Helpers and self-assigned tasks using Twilio, including getting started. More ...

Blazor Helpers App Twilio : Setting up
February 14, 2021 18:53 David Jones MVP twilio blazor csharp blazor-server sms twilio
Getting started with Twilio for sending and receiving SMS messages.. More ...

Blazor Helpers App Twilio : Discussion about using SMS
February 13, 2021 18:14 David Jones MVP twilio blazor csharp blazor-server sms twilio
Discussion about using SMS to request confirmations from volunteers using SMS in the Helpers app. More ...

Blazor Helpers App : More on Includes with Selections
February 12, 2021 14:59 David Jones MVP blazor blazor entity-framework csharp blazor-server code-first
Another look at using .Includes when using Entity Framework to query a SQL Server database as part of a Blazor Server app.. More ...

Azure Devops Jekyll Site : Ruby Version 3 issue
February 11, 2021 17:28 David Jones MVP web jekyll web devops markdown disqus azure ruby
Needed to set Ruby <3.0 to solve Build failure in Azure Devops Pipeline. More ...

Blazor Helpers App : Entity Update
February 09, 2021 18:39 David Jones MVP blazor blazor entity-framework csharp blazor-server code-first update
Entity Update including the need, or not, to do an EntityStste update before SaveChanges(). More ...

Blazor Helpers App : Cascade Delete
February 08, 2021 01:24 David Jones MVP blazor blazor entity-framework csharp blazor-server code-first cascade-delete
Adding Entity Framework Deletion, including Cascade Delete to the Helpers App. More ...

Blazor Helpers App : Add Some Data
February 04, 2021 12:02 David Jones MVP blazor blazor entity-framework csharp blazor-server code-first
Add some sample data to the Helper app from a compound Json string and display it in a razor page. More ...

Blazor Helpers App : EF Migrations and CRUD Operations
January 31, 2021 16:56 David Jones MVP blazor blazor entity-framework csharp blazor-server code-first
The previous two posts went into detail about getting a Code First database Entity Framework setup for a Blazor Server app in a transparent manner. Let’s now look at adding some CRUD functionality to app’s service. More ...

Blazor Helpers App : Entity Framework Summary
January 30, 2021 17:38 David Jones MVP blazor blazor entity-framework csharp blazor-server
A summary of the steps for setting up a database using Entity Framework Core via Code First More ...

Blazor Helpers App : An Entity Framework Primer
January 30, 2021 13:23 David Jones MVP blazor blazor entity-framework csharp blazor-server
A HowTo on setting up a Blazor Server App using Entity Framework Core to connect to an SQL Server Database using Code First. More ...

Blazor Helpers App : Entity Framework Basics
January 29, 2021 11:54 David Jones MVP blazor blazor entity-framework csharp blazor-server
Following on from the previous post, this post discusses Code First data access to a SQL Server Database in a Blazor Service app using Entity Framework Core. More ...

Blazor Helpers App : Overview of a Database oriented App
January 27, 2021 16:59 David Jones MVP blazor blazor entity-framework csharp blazor-server
An overview of a Blazor Server app for registering volunteers for tasks to assist assit officials at a track meet. More ...

Azure DevOps-Blob Storage Credentials
December 16, 2020 14:05 David Jones MVP web jekyll web devops markdown disqus azure
This blog covers the creditialing required when doing a Release from and Azure Devops pipeline after the Jekyll Blog Site has been built by the pipeline. An issue arose when the account used for Devops lost its subscription to Azure, but not Azure Devops. More ...

Azure Sphere : IoT Central Scripting Limitations
December 11, 2020 02:38 David Jones MVP azsphere azsphere azure iot iotedge iothub iotcentral
A comparison of the ability to script the setup of an Azure Sphere for direct IoT Hub-DPS interaction versus the IOT Central path. Can you get away with not using the IoT Central portal? More ...

Blazor-IoT : Azure IoT Hub Interaction using Blazor on ... Arduino
November 13, 2020 23:46 David Jones MVP blazor iot iothub blazor rpi azure csharp gpio bindings
Posting telemetry data to an IoT Hub from an Arduino device via a Blazor Service More ...

Blazor-IoT : Azure IoT Hub Interaction using Blazor on a RPi - A Wrap Up
October 21, 2020 12:51 David Jones MVP blazor iot iothub blazor rpi azure csharp gpio bindings
A final wrap up and conclusion to these posts on Blazor and dotnet/iot More ...

Publishing Blazor to Desktop IIS
October 11, 2020 17:52 David Jones MVP blazor iis blazor dotnet csharo dotnetcore aspdotnetcore web publishing port
Had some issues with publishing a Blazor app form Visual Studio to IIS on my desktop. Have now resolved that with a little help from other MVPs and searches. More ...

Blazor-IoT : Azure IoT Hub Interaction using Blazor on a RPi - Some Hacks ... and a Solution.
October 06, 2020 14:26 David Jones MVP iot iot iothub blazor rpi azure csharp gpio bindings
Some attempts at getting around the inability of the Blazor Client app to directly interact with sensors. More ...

Blazor-IoT : Azure IoT Hub Interaction using Blazor on a RPi - GPIO and Bindings App
October 05, 2020 14:06 David Jones MVP iot iot iothub blazor rpi azure csharp gpio bindings
A simple Blazor WASM apps that demonstrates what works and doesn’t work with dotnet/iot GPIO and Bindings. More ...

Blazor-IoT : Azure IoT Hub Interaction using Blazor on a RPi - App for Monitoring an IoT Hub submissions
October 04, 2020 14:35 David Jones MVP iot iot iothub blazor rpi azure csharp gpio bindings
A Blazor WASM App for periodically monitoring messages sent to an Azure IoT Hub … More ...

Blazor-IoT : Azure IoT Hub Interaction using Blazor on a RPi - A Simulated IoT Hub Device
October 03, 2020 14:33 David Jones MVP iot iot iothub blazor rpi azure csharp gpio bindings
A Blazor WASM App simulating sensors on the client… More ...

Blazor-IoT : Azure IoT Hub Interaction using Blazor on a RPi - Intro
October 01, 2020 18:40 David Jones MVP iot iot iothub blazor rpi azure csharp
A discussion about what you can and can’t do with a Blazor app running on a Raspberry Pi wrt interacting with Sensors on the Pi whilst sending the data to an Azure IoT Hub. Includes some exploration of attempts to get around limitations. More ...

Blazor : Web App for Logging Restaurant Attendance
September 13, 2020 17:48 David Jones MVP blazor blazor aspnetcore dnetcore
As a staged relaxation of COVID-19 restrictions, some governments allow restaurants and other public facing businesses to reopen with restrictions of the number in attendance at a time and with logging clients who attend. A Blazor web app has been developed to efficiently and simply facilitate the logging of patrons attendance at a restaurant using a QR Code attached to each table as the initiator of the logging. More ...

Blazor How To : And now for a Rap Up
August 29, 2020 11:57 David Jones MVP blazor blazor wasm aspnetcore dnetcore csharp upload zipfile httpget httppost httpdelete
Fifteen posts this month document how various functionalities such as downloads, uploads, image views, foldler browsing, using Spinnors as well as viewing Markdown content. This post is a rap up of these posts dissecting a Blazor WASM app as presented in the first post in this series…A Compendium of Blazor How To’s More ...

Blazor How To : Http Delete Server File Management
August 28, 2020 15:09 David Jones MVP blazor blazorhowto wasm aspnetcore dnetcore csharp httpdelete
A bit of file management is required on the Server so as to be able to delete uploaded and on server generated zip files. This post covers selecting working folders to be cleared and actioning that. More ...

Blazor How To : Upload a Zip file.
August 27, 2020 15:31 David Jones MVP blazor blazorhowto wasm aspnetcore dnetcore csharp upload zipfile httppost
Upload a zip file from the client desktop to the server and unzip it. The methodology can be used with any file whether text or binary. It resolves an issue with the method as posted elsewhere. More ...

Blazor How To : Zip file creation on Server and Download to Client
August 26, 2020 14:54 David Jones MVP blazor blazorhowto wasm aspnetcore dnetcore csharp download zipfile
Zip up a specific sub folder of the Samples on the Server and Download it to the Client Desktop. More ...

Blazor How To : A Client Page for Viewing a Folder on the Server
August 22, 2020 14:29 David Jones MVP blazor blazorhowto wasm aspnetcore dnetcore csharp
A Blazor Client Page for listing a Server Folder’s File Contents and for displaying some of them. There is also an option to zip up the folder and download it to the desktop. More ...

Blazor How To : A Client Control for Viewing Images
August 22, 2020 14:17 David Jones MVP blazor blazorhowto wasm aspnetcore dnetcore csharp
This image display mechanism is encapsulted in a custom Blazor Client Component called Image. This post covers the code to get an image from the server and display it in the Component. More ...

Blazor How To : A Client Control for Viewing Markdown Content
August 22, 2020 14:16 David Jones MVP blazor blazorhowto wasm aspnetcore dnetcore csharp
The Markdown display mechanism is encapsulated in a custom Blazor Client Component, ReadMe. This post covers the code to request a Markdown file from the server and to render the response. More ...

Blazor How To : A Client Text View Control including Copy and Downloads functions
August 22, 2020 14:16 David Jones MVP blazor blazorhowto wasm aspnetcore dnetcore csharp
A Blazor Custom Client Control named ClipBoardComponent, for getting a text file from the server and displaying it. Includes buttons for copying that text to the Clipboard and for downloading it to the desktop as a file. More ...

More on creating this blog site
August 21, 2020 17:31 David Jones MVP web jekyll web devops markdown disqus azure github
This site is a customised Jekyll site using Mardown to author content. It is authored locally uses Azure Devops as a repository where it is built and from where it is publsihed published. It is hosted on Azure as a Blob Storage Static Website. I’ve just added another script to simplify content creation which addresses one of two issues. More ...

Blazor How To : WASM Http File Get - Server Response
August 20, 2020 23:30 David Jones MVP blazor blazorhowto wasm aspnetcore dnetcore csharp server httpget
The Server response to a Client Http Get request for a Text, Markdown and Image files. More ...

Blazor How To : WASM Http File Get - Client Request
August 20, 2020 22:30 David Jones MVP blazor blazorhowto wasm aspnetcore dnetcore csharp
Making parameterised Http Client Get requests to the Server for various Files types. More ...

Blazor How To : Folding Content
August 20, 2020 03:44 David Jones MVP blazor blazorhowto aspnetcore dnetcore blazorcomponents csharp
How to show and hide Blazor content. Its simple! More ...

Blazor : A Recursive Client Folde Component - 2
August 20, 2020 02:47 David Jones MVP blazor blazorhowto wasm aspnetcore dnetcore csharp blazorcomponent
The previous post described the functionality of Bazor Component called FolderTree for displaying folder information. This post covers the code for the component and a page that hosts it. More ...

Blazor : A Recursive Client Folder Component - 1
August 19, 2020 16:48 David Jones MVP blazor blazorhowto wasm aspnetcore dnetcore csharp blazorcomponent
As covered in the previous post [A Generic App for displaying Sample Apps]](/blazor/Blazor-A_Generic_App_for_displaying_Sample_Apss-blazor.html), a folder of sample apps is recursive serached for project files on the server. This information is placed in a tree which also unfolds to a a list. This list is passed to the client which uses a Blazor Component to display that content in the tree format, recursively. This post discusses the recurse Component. More ...

Blazor : Scanning files on the Server
August 19, 2020 15:24 David Jones MVP blazor blazorhowto aspnetcore dnetcore csharp
The Blazor app discussed in a previous blog post A Generic App for displaying Sample Apps presents a tree view of sample apps in a repository as uploaded to the Service. This posts covers the recursive scanning of the samples on the Server. The next post covers the Client Blazor Component for displaying this information. More ...

Jekyll-Markdown : Embedding Animated Gifs
August 19, 2020 13:29 David Jones MVP web jekyll markdown web gif animatedgif blogpost web blazor
About capturing an animation as an Animated Gif and using in Markdown web context. More ...

Blazor How To : Spinners
August 18, 2020 22:30 David Jones MVP blazor blazorhowto web blazor apsnetcore
Using Spinners on a Blazor .razor page. Use of a Spinner library. More ...

Blazor : A Generic App for displaying Sample Apps
August 18, 2020 14:46 David Jones MVP blazor blazorhowto dotnetcore aspnetcore csharp web samples
This Blazor WASM app extends to previous functionality so that the samples hosted can be dynamically changed without republishing the app. Some cool Blazor functionality demonstrated. More ...

.NET Core : iot Repository
July 31, 2020 22:56 David Jones MVP coding dotnet dotnetcore iot csharp
I’ve forked the dotnet/iot respository, as djaus2/iot and upgraded the sample apps to .NET Core 3.1, leaving the 2 packages (GPIO and Bindings) and the device drivers at V2.1 for backwards compatibility. I have now done a Pull Request of this back to dotnet/iot. More ...

.NETCore : appsettings.json
July 31, 2020 18:50 David Jones MVP coding dnetcore appsettings
When you create a new Blazor project, you get an appsettings.json file in the structure to get the settings conatined therein at startup. How do you implement it for a .NET Core Console app? More ...

Blazor : SPA Template
July 31, 2020 18:20 David Jones MVP coding blazor dotnetcore
SPA means Single Page Application. In this context, taken literally, it beens that the Blazor app has only one razor page. Here is a way to use just one page but appears to have multiple pages through multiple paths and ASP.NET conditional coding. More ...

Blazor : A WASM app for presenting Sample Apps from an API Repository
July 20, 2020 14:05 David Jones MVP blazor blazor wasm pwa dotnet dotnetcore iot
In a repository such as dotnet/iot (on GitHub), rather than having to download the whole repository to get at the sample apps (or to copy and paste from web pages on GitHub) wouldn’t it be nicer to have a rich UI to present the samples in an interactive way such that when you find one you want, you can get all of project code just for that sample app. GetAnIOTSampleApp does just that for the dotnet/iot repository. More ...

Nuget Packages 101 : Creating and using a local Nuget Package
July 19, 2020 20:15 David Jones MVP coding dotnet nuget dotnetcore
A quick introduction for creating a Nuget package locally and using it directly with a .NET Core app. [netcoreapp3.1]: More ...

Blazor : On a Raspberry Pi
June 30, 2020 23:29 David Jones MVP blazor blazor web dnetcore aspnetcore
Blazor will run on a RPi! Can even create and build it there… And access GPIO. How about remotely accessing RPi’s GPIO via a Blazor WebAssembly App? More ...

Blazor : Some activities
June 30, 2020 21:39 David Jones MVP blazor blazor web dnetcore aspnetcore
A look at persistence of rendered content with the different variants of Blazor Apps. More ...

Blazor : More on App Options
June 28, 2020 18:02 David Jones MVP blazor blazor web dnetcore aspnetcore
My take on a succinct comparison of Blazor App options. More ...

Blazor How To : Server App with GPS
June 27, 2020 18:37 David Jones MVP blazor blazor web dnetcore aspnetcore gps
GPS capability was added to the Blazor Server app using AspNetMonsters.Blazor.Geolocation. Whilst there was a few issues as covered in an Issues post on GitHub, this post encompasses those issues. I have further improved that solutions covered in that post. More ...

Blazor : A Server only Web App
June 23, 2020 20:42 David Jones MVP blazor blazor web dnetcore aspnetcore mssqlserver qrcode
A light weight quick response Blazaor Server app for logging participants entry to a sporting facility for COVID-19 contact tracing. Uses a QR Code generated by the site to navigate users to the site. More ...

Blazor Gym Booking App : WebAssembly App - The Projects
June 07, 2020 17:08 David Jones MVP blazor blazor web dnetcore aspnetcore
Some outlines and code snippets of some of the concepts I learnt in my “learning curve” and some related Blazor code snippets. More ...

Blazor Gym Booking App : Musings - Data
June 06, 2020 18:16 David Jones MVP blazor blazor web dnetcore aspnetcore
An overview of how Bookings data was stored and retrieved in the app using a Sqlite Database. More ...

Blazor Gym Booking App : Musings - Getting Started plus Authentication
June 05, 2020 23:08 David Jones MVP blazor blazor web dnetcore aspnetcore
Issues considered and addressed in building the Blazor web app from scratch. A HowTo. More ...

Blazor Gym Booking App : A Booking App for post COVID-19
June 05, 2020 15:22 David Jones MVP blazor blazor covid-19 web dnetcore aspnetcore
Developing a Blazor web app from scratch for managing Gym bookings that needs to limit the number of participants in the room at one time. More ...

PowerShell : Porting from a System.Windows.Forms Form
May 23, 2020 23:50 David Jones MVP coding powershell, windowsforms, dotnet
In the PowerShell tool djaus2/az-iothub-ps on GitHub, I added some graphical UI forms. The UI was first designed in a Windows Forms C# app. This post tells you how. More ...

az-iothub-ps : Azure IoT Hub PowerShell V3.0.4 Features
May 23, 2020 10:03 David Jones MVP azedge iot-core iothub azure
Details, including latest extensions, of the az-iothub-ps PowerShell tool for creating, managing and using Azure IoT Hub components. More ...

az-iothub-ps : Previous Info
May 22, 2020 17:38 David Jones MVP azsphere aiot-core iothub azure
The previous README from the repository More ...

Azure Sphere Projects : BME280 Sensor (Part 3) IoT Central
May 17, 2020 11:56 David Jones MVP azedge azsphere azure iot iothub bme280 iotcentral
Insert summary here More ...

PowerShell : Header Metainfo
May 11, 2020 19:57 David Jones MVP coding powershell
Decided to add metainformaton to each PS file as a header comment. Needed to recusively add a template to PS files. More ...

PowerShell : show-image A PS Function to Display an Image in a Windows Form
May 10, 2020 20:12 David Jones MVP coding powershell iothub
How do you call and show an image from a PowerShell script. You need it in a modal form with that can be closed but such the the calling script waits for its closure. show-image does this. More ...

PowerShell : Functions for a quick user response
May 10, 2020 17:08 David Jones MVP coding powershell
A couple of PowerShell functions for getting a quick single key response from a user for “Yes/No” and “Press any key to Continue” scenarios with options for the prompt and default response, as part of the djaus2/az-iothub-ps tool (available on GitHub). More ...

PowerShell : A Function to download and run an Installer
May 10, 2020 12:51 David Jones MVP coding powershell
I’ve added a Setup menu for downloading and installing the Azure Cli and the Azure Sphere SDK as part of the djaus2/az-iothub-ps tool (available on GitHub). I’ve encapsulated that functionality into a function for reusablity. More ...

This blog site construction : Site Calendar Page
May 06, 2020 17:29 David Jones MVP web jekyll markdown blogsite devops
I’ve added an index of posts in a menu headed by year and months. More ...

PowerShell Code Signing of scripts
May 05, 2020 14:44 David Jones MVP coding powershell
A GitHub repository is available with PowerShell scripts for signing PowerShell scripts!! In particular you can create a personal certificate for local signing, sign individual scripts, recursively sign a folder of scripts and rfecursively unsign them. More ...

Azure Sphere Projects : Azure Sphere Getting Started
May 04, 2020 13:39 David Jones MVP azsphere azsphere azure iot iotedge iothub
How to get started quickly with Azure Sphere using az-iothub-ps too More ...

Azure Sphere Projects : DPS and IOT Hub v IOT Central with az-iothub-ps-1
May 03, 2020 10:53 David Jones MVP azsphere azsphere azure iot iotedge iothub iotcentral
The az-iothub-ps PowerShell tool was developed to support the Azure IoT Hub and Device creation, management as well as the generation of the runtime json file with connection details for .NET Core Azure IoT Hub SDK Quickstarts, in a menu driven manner. The tool has now been extended for Azure Sphere where DPS (Device Provisioning Service) or IoT Central are used. The tool has now been extended to orchestrate the creation of the required elements, collection of the required connection metadata. The outcome is the generation of the app_manifest.json file required for AzSphere apps. There are some issues though … More ...

Azure Sphere : Resources
April 23, 2020 23:35 David Jones MVP azsphere azsphere azure iot iotedge iothub
A compendium of links to online resources with respect to Azure Sphere More ...

Azure Sphere Projects : az-iothub-ps Extensions
April 22, 2020 21:40 David Jones MVP azsphere azsphere azure iot iothub powershell
The az-iothub-ps suite of PowerShell commands_enable a menu driven creation of Azure IoT Hubs and related entities as well as facilitating the running of Azure IoT Hub SDK .Net Core Telemetry and Device Provsioning Quickstart examples, seamlessly configured to use the hub entities. az-iothub-ps has now been extened to support all most of the steps, in a menu driven manner,required to setup and run an Azure Sphere. It can specifically generate the required app_manifest.json file for and Azure IoT Hub app. More ...

Azure Sphere Projects : BME280 Sensor (Part 2)
April 20, 2020 02:56 David Jones MVP azsphere azsphere azure iot iothub bme280
In the previous post, an app to read environment values using the BME280 was presented using an Azure Sphere with the device connected by a Grove Shield. With this, the device isn’t directly connected to the Az Sphere’s I2C but connects via an I2C bus master on the shield which communicates with the Az Sphere via a UART. This article discusses the use of an existing GitHub project that supports direct connection of the BME280 to the Azure Sphere via I2C. This project also sends the data to an Azure IoT Hub as telemetry using Device Provisioning Service (DPS). More ...

GitHub is now free for Teams
April 17, 2020 10:51 David Jones MVP appdev github applicationdev repository devops cicd git
GitHub has announced that they are making private repositories with unlimited collaborators available to all GitHub accounts More ...

Azure Sphere Projects : BME280 Sensor
April 17, 2020 02:30 David Jones MVP azsphere azsphere azure iot iothub bme280
THe BME280 temperature, pressure and humiditty sensor, and similar devices, can be used with some existing sample Azure Sphere projects with and without modification, to stream telemetry data to an Azure IoT Hub. This article looks at a project using the Seeed Grove version of the sensor mounted on a MT3620 Grove shield, as well as a project for when the sesnor is directly connected to the MT3620 Azure Sphere without the shield. More ...

az-iothub-ps : Device Provisioning Service scripts added
April 15, 2020 22:50 David Jones MVP iot powershell iothub azure
The az-iothub-ps suite of PowerShell scripts for creating all of the elements of an Azure IoT Hub scenario as well as automatically querying for connection metadata for IoT device apps, now supports generating a DPS for a Resource Group, as well as connecting a hub in the group to it. More ...

Azure Sphere : Trying out some of the Samples
April 14, 2020 21:12 David Jones MVP azsphere azsphere azure iot iotedge iothub
A previous blog is a landing page to list sample Azure Sphere projects. Also, in the previous blog in this series, some activity was proposed to try out some of these sample projects, extend some and to ultimately implement the device component of some of the Azure IoT Hub Telemetry Quickstarts as discussed and extended in previous blogs here. This article discusses the “cooks-tour” of some of these samples. More ...

Azure Sphere Sample Projects V2
April 13, 2020 23:29 David Jones MVP azsphere azsphere azure iot iothub
Some links to sample projects for the Azure Sphere on GitHub post Azure Sphere go live (GA). More ...

And now for something completely different : Azure Sphere GA, Security and a 2Do List
April 01, 2020 15:43 David Jones MVP azsphere azsphere azure iot iotedge iothub
Well not completely different. Just had to use the Monty Python phrase! Of late I have delved deep into getting hardware connected to the Raspberry Pi communicating with an IoT Hub, using .Net Core. Telemetry to a user as well as command and control from the user. GPIO, Leds, buttons, motors; I2C and 1-wire environment sensors. Now lets do all of that again with the Azure Sphere. More ...

.Net Interactive and Try .Net
March 30, 2020 21:05 David Jones MVP web dotnet dotnetinteractive training dotnetcore
Recently I have seen the light. An epiphany if you must! .Net Interactive is the way of the future for creating on-line tutorials using Blazor or Markdown Insert summary here More ...

.Net Core on IoT : Some Deployment key points
March 30, 2020 15:01 David Jones MVP iot powershell dotnetcore iothub azure iot-core raspbian dotnetio
A few short hints on running .NET Core Az IoT Hub apps on the RPi. More ...

Now for some HW on the RPi : IoT Hub Device Streaming Apps that Send & Recv real data - 2 more apps
March 15, 2020 14:27 David Jones MVP iot powershell dotnetcore iothub azure iot-core raspbian dotnetio
Can now run the DHT22 sensor functionality, as in previous Telemetry post, using Device Streaming. Also can remotely control a DC motor using Device streaming! How good is that! More ...

Now for some HW on the RPi : IoT Hub Telemetry App that sends real data
March 15, 2020 14:27 David Jones MVP iot powershell dotnetcore iothub azure iot-core raspbian dotnetio
The az-iothub-ps set of PowerShell scripts has been extended: Building upon the .NET Core GitHub project djaus2/DNETCoreGPIO, there is now an app under Telemetry that runs on the RPi that sends real Telemetry data to the IoT Hub. Uses a DHT22 sensor. Only works on Raspbian though. More ...

Now for some HW on the RPi : A Sampler from the GitHub Repository dotnet/io
March 14, 2020 14:27 David Jones MVP iot powershell dotnetcore iothub azure iot-core raspbian dotnetio
The .NET Core GitHub project djaus2/DNETCoreGPIO runs on the RPi, whether Raspbian or IoT-Core (unchanged) to exemplify some of the hardware capabilities of the GitHub project dotnet/io. This uses Nuget packages from that project rather than direct dependencies. More ...

.NET Core on IoT : It's now even easier. Enter names on command line.
March 05, 2020 14:27 David Jones MVP iot powershell dotnetcore iothub azure iot-core raspbian
It’s now gone mega: Just run get-iothub GroupName,HubName,DeviceName And it will auto generate all 3! More ...

.NET Core on IoT : You can now fully automate Group-Hub-Device creation
March 01, 2020 22:45 David Jones MVP iot powershell dotnetcore iothub azure iot-core raspbian
New main Menu item: Get a New: (Group … Hub in Group … Device for Hub) Will generate the 3 new entities as well as connection strings as environment variables etc! All as one command! More ...

.NET Core on IoT : Using the az-iothub-ps script
February 28, 2020 17:13 David Jones MVP iot powershell dotnetcore iothub azure iot-core raspbian
Just the steps to use the script. No background info._ More ...

.NET Core on IoT : Remote Publishing to the RPI
February 27, 2020 19:01 David Jones MVP iot powershell dotnetcore iothub azure iot-core devicestreaming telemetry raspbian
You can skip the Background (as per previous post) for building and deploying a .NET Core app on the desktop for the RPi and just follow the steps here. Or read that first for a better understanding. This includes publishing for IoT-Core and Raspbian OS’s. More ...

.NET Core on IoT : One more way of doing this - Background
February 26, 2020 16:54 David Jones MVP iot powershell dotnetcore iothub azure iot-core devicestreaming telemetry raspbian
It may at times be convenient, but building an app on the RPi, whether for IoT-Core or for Raspbian might not be the most efficient way of doing it. Lets look at building the app on the desktop and then copying the built dotnet app to the Pi. More ...

.NET Core on IoT : Using the PS Script to run Quickstarts on RPi (Raspbian)
February 25, 2020 07:19 David Jones MVP iot powershell dotnetcore iothub azure iot-core devicestreaming telemetry raspbian
This copy-paste setup of .NET Core to run the Azure IOT Hub SDK Quickstart apps on a RPi running Raspbian is similar to the previous (simpler) post for IOT-Core but with a few caveats … More ...

.NET Core on IoT : Using the PS Script to run Quickstarts on RPi (IoT-Core) - Simpler
February 19, 2020 07:19 David Jones MVP iot powershell dotnetcore iothub azure iot-core devicestreaming telemetry
A simpler approach is now afforded by a modification made to the generated set-env script. Just set the IoT Hub up as previous on the development desktop, generate the enviroment variables … More ...

.NET Core on IoT : Using the PS Script to run Quickstarts on RPi (IoT-Core)
February 15, 2020 20:56 David Jones MVP iot powershell dotnetcore iothub azure iot-core devicestreaming telemetry
The previous few posts introduced the one stop shop, the az-iothub-ps PowerShell script for setting up an Azure IoT Hub and for orchestrating the running of the Azure IOT Hub SDK Quickstart ,NET Core apps on a desktop. The prior posts in this series covered setting up .NET Core to run on a RPi. This post covers using the script in a PowerShell terminal running on a RPi running Windows 10 IoT-Core. A later post will cover the same scenario but when running Raspbian on the RPi. More ...

.NET Core on IoT : Az-IoTHub-PS ... The IoT Hub Quickstart Apps
February 15, 2020 16:50 David Jones MVP iot powershell dotnetcore iothub azure iot-core devicestreaming telemetry rpi
This repository has a copy of the Azure IoT Hub SDK Quickstart .NET Core apps folder. It has been modified so that all apps get the Hub Connection strings from enviroment variables, that can be set by the PowerShell script in dicussion here. The script can also direct you to the folder for each quickstart upon selection from a menu. More ...

.NET Core on IoT : Use the PS Script to set up .NET Core
February 14, 2020 22:35 David Jones MVP iot powershell dotnetcore iothub azure iot-core
As an extra feature, you can use the az-iothub-ps script to download a targeted Azure IoT Hub SDK binary, expand it to qs-apps\dotnet, configure the shell running .NET Core. More ...

.NET Core on IoT : Fast tracking IoT Hub Creation with PS
February 05, 2020 13:19 David Jones MVP iot powershell dotnetcore iothub azure iot-core
A PowerShell script that delivers the steak knives too! Run ONE script to create a new group, new hub and new device with prompts for names and menus for other info. Get the required connection strings as System environment variables, and a script to regenerate them. What else? The IoT Hub SDK Quickstarts are part of the repo with some mods so that all info required is in the environemnt variables. No editing required! More ...

.NET Core on IoT : On Windows Subsystem for Linux
January 09, 2020 12:55 David Jones MVP iot csharp dnetcore appdev rpi raspbian iothub azure wsl
Digressing a little: A look at getting .NET Core going on Windows Subsystem for Linux using Debian. Debian because that is what Raspbian is. The Console app and Blazor web app as well. Includes first time set up of WSL-Debian. More ...

.NET Core on IoT : Getting started on Raspbian
January 09, 2020 11:09 David Jones MVP iot csharp dnetcore appdev rpi raspbian iothub azure
A Quickstart for setting up .NET Core V3.1 or later on a RPi running Raspbian so as to be able to build and run .NET Core apps from the command line. Start with a Console app. An ASP.NET Core Web App is also run on the device. More ...

.NET Core on IoT : Getting started on Win 10 IoT Core
January 08, 2020 16:09 David Jones MVP iot csharp dnetcore appdev rpi iot-core iothub azure
A Quickstart for setting up .NET Core V3.1 on a RPi running IoT-Core so as to be able to build and run .NET Core apps from the command line. Start with a Console app. An ASP.NET Core MVC Web App is also run on the device. More ...

Some PowerShell Functionality
January 06, 2020 20:35 David Jones MVP coding powershell
Just developed some scripts to assist blogging on my BlogSite. To do so I did some “Monkeys on a Typewriter Coding” using PowerShell. This site is a custom Jekyll-Markdown site. I wanted a couple of scripts to generate a new blog post using metadata obtained from command line parameters and a menu. I could have coded them in Jekyll but chose to do in it in PowerShell. More ...

.NET Core on IoT : Options for the RPi
January 06, 2020 14:39 David Jones MVP iot csharp dnetcore appdev rpi iot-core raspbian iothub azure
There are three or four ways to build .NET Core on the RPi whether IoT-Core or Raspbian. Focus here is upon on the device app development. More ...

.NET Core on IoT : Some key facts
January 05, 2020 22:17 David Jones MVP iot csharp dnetcore appdev rpi iot-core raspbian iothub azure
Let’s look at a few key issues and resources before getting started with .NET Core on the RPi. More ...

This blog site construction : Latest
January 03, 2020 20:11 David Jones MVP web jekyll markdown blogsite devops
As discussed in previous blogs on this site, the site had its roots as a GitHub Pages site. It was then transferred to Azure Devops and further extended there with custom extensions sourced from blogs elsewhere. Custom coding was also done to facilitate features desired for this site. This article sheds more light on how the site was implemented as well as upon some new features recently added. More ...

Australia alight again
January 03, 2020 16:56 David Jones MVP gen bushfire wildfire cfa nfs emergency
Australia is again facing a toturous summer of bushfires (wildfires). Each summer it seems to get worse. In recent days catastrophic fires have started in Victoria nd NSW with hundreds of homes being lost as well as many lives. Remote communities have been isolated. The navy is being used to evaculate one of them. More ...

.NET Core on IoT : Quickstart Apps
December 29, 2019 21:40 David Jones MVP iot csharp dnetcore appdev rpi iot-core raspbian iothub azure device service streaming devicestreaming telemetry
This is a set of articles about developing and running .NET Core apps on the Raspberry Pi whether running Win 10 IoT-Core or Raspbian. This article summarises the .NET Core apps as used in the Azure IoT Hub SDK Quickstarts. More ...

.NET Core on IoT : Overview
December 29, 2019 21:40 David Jones MVP iot csharp dnetcore appdev rpi iot-core raspbian iothub azure device service streaming devicestreaming telemetry
This is a set of articles about developing and running .NET Core apps on the Raspberry Pi whether running Win 10 IoT-Core or Raspbian. This article sets the scene for these articles. More ...

AzureAdventCalendar : Azure IoT Hub Super Quickstart in 5 minutes!
December 24, 2019 21:40 David Jones MVP azure azure iothub csharp uwp dnetcore device service streaming devicestreaming telemetry
This is my contribution to a wonderful initiative by @Pixel_Robots and @Gregor_suttie to get the Azure community to help others learn about all the different capabilities that Azure provides. I have created a video describing how to get going with Azure IoT Hub via a UWP app and with the aim of dispelling some of the fears around the complexity of getting started with #IoTHub. You can watch my video here and see all the other #AzureAdventCalendar videos on the YouTube channel More ...

A Multifaceted User Control for displaying Application Settings
August 13, 2019 22:11 David Jones MVP appdev csharp uwp usercontrol xaml settings applicationdev
A C# UWP Xaml Custom UserControl is presented that contains a range of subelements, only one of which is ever displayed. Selection is by setting an enum property type for the instance in the host Xaml page. The host Xaml page is modelled upon the HTML flow presentation style and so requires a stacked set of similar elements. One UserControl class is able to function as 8 different types of UI elements when instantiated in a host page. The types include, collapsable headings, comments, code to copy, links and textual input with labels and functional buttons More ...

Saving and Loading C# Application Settings through Reflection
August 13, 2019 22:11 David Jones MVP appdev csharp uwp reflection settings applicationdev
Azure IoT Hub apps can require a number of configuration settings such as the IoTHubConnectionString. If they are all saved in-app in the one static class as its public properties it would be nice to use Refection to interrogate the class to get property names and values without explicit naming of the properties when saving and loading the setting to and from the app’s Local Settings. This article presents reusable methods for saving and reloading those settings to and from an app’s Local Settings. More ...

AziothubDeviceStreaming : App Extensions Poll
August 08, 2019 21:04 David Jones MVP azure azure iothub csharp uwp dnetcore device service streaming
I’ve been working furiously upon extending the features of the AzDeviceStreamingApp and upon improving it’s UI. I’m asking for feedback on un-pcoming features of the app and of mooted features. I’m also asking for suggestions for feature extensions for the app . More ...

AziothubDeviceStreaming : App Functionality Checklist
July 06, 2019 21:04 David Jones MVP azure azure iothub csharp uwp dnetcore device service streaming
The previous posts in this series looked in detail at the AziothubDeviceStreaming library and the UWP-Xal app that exercises the library. The UWP app is now being published in the AppStore as AzDeviceStreamingApp. This blog is a checklist of the app’s functionality and what works. More ...

AziothubDeviceStreaming : How to use the Updated UWP-Xaml app
June 30, 2019 21:04 David Jones MVP azure azure iothub csharp uwp dnetcore device service streaming
The previous posts in this series looked in detail at the AziothubDeviceStreaming library and the UWP-Xal app that exercises the library. You can get a copy of the UWP-Xaml app by downloading the repository and building the app. Also, the UWP app is now being published in the AppStore as AzDeviceStreamingApp. This blog covers how to use it. More ...

AziothubDeviceStreaming : Under the hood-The API Options
June 22, 2019 21:40 David Jones MVP azure azure iothub csharp uwp dnetcore device service streaming devicestreaming
In a previous post a .Net Standard library that can be used in .Net Core, .Net Standard, UWP and Xamarin apps (last yet to be tested) was presented that implements the device and service functionality of IoT Hub Device. The previous blog in this series covered the use of thelibrary’s API when used in its simplest mode, the default single-shot mode. This blog discusses the use of the optional features of the library. More ...

AziothubDeviceStreaming : Under the hood-The API
June 11, 2019 21:40 David Jones MVP azure azure iothub csharp uwp dnetcore device service streaming devicestreaming
In a previous post a .Net Standard library that can be used in .Net Core, .Net Standard, UWP and Xamarin apps (last yet to be tested) was presented that implements the device and service functionality of IoT Hub Device Streaming that can be used in UWP and other types apps. The previous blog exemplified the use of the library through a UWP-XAML test app. This blog discusses the use of the library’s API from a programmatic perspective. More ...

AziothubDeviceStreaming : The UWP-XAML app V1
June 10, 2019 21:04 David Jones MVP azure azure iothub csharp uwp dnetcore device service streaming
In the previous post a .Net Standard library that can be used in .Net Core, UWP and Xamarin apps (last yet to be tested) was presented that implements the device and service functionality of IoT Hub Device Streaming that can be used in UWP and other types apps. This blog discusses the use of the library by the UWP-XAML app in the repository. More ...

AziothubDeviceStreaming : Azure IoT Hub Device Streaming - A Reusable and Extensible Library
June 09, 2019 12:07 David Jones MVP azure azure iothub csharp uwp dnetcore device service streaming
In the previous post, some issues were raised wrt refactoring of the Azure IoTHub SDK Device Streaming Echo sample functionality as .Net Core and UWP reusable libraries. These issues have been resolved and the library is now presented as a .Net Standard library that can be used in .Net Core, UWP and Xamarin apps (last yet to be tested). The library implements the device and service functionality of IoT Hub Device Streaming that can be used in UWP and other types apps. More ...

AziothubDeviceStreaming : Azure IoT Hub Device Streaming
May 27, 2019 12:07 David Jones MVP azure azure iothub csharp uwp dnetcore device service streaming
A set of projects examining refactoring of the Azure IoTHub SDK Device Streaming Echo sample functionality as .Net Core and UWP reusable libraries. The aim is to develop a library taht implements the device and service functionality of IoT Hub Device Streaming that can be used in UWP apps. More ...

UWP Sockets Library
May 20, 2019 12:07 David Jones MVP nw sockets tcpip client server networking uwp
A High Level UWP TCPIP Sockets library on GitHub for Socket Client and Server. Includes sample Client and Server apps. More ...

A Brief History in IoTime
March 31, 2019 12:38 David Jones MVP azedge iot azure iothuib iotedge azmoibileservices
A brief look at the development of IoT from the content of of a a bolted on Microsoft (Embedded) Developer. I hope Stephen Hawking can excuse my pun, from up there, or from whatever multiverse or blackhole he is in. More ...

Azure Sphere Sample Projects
March 30, 2019 23:29 David Jones MVP azsphere azsphere azure iot iothub
Some links to sample projects for the Azure Sphere on GitHub. More ...

My Azure Sphere Scripts
March 30, 2019 22:26 David Jones MVP azsphere azsphere azure iot iotedge iothub
This GitHub repository contains a number of scripts, as DOS batch files, that do simplify the setting up of an Azure Sphere device. Where user input is required a user prompt for input occurs. Where the user needs to make a choice from existing Azure or other resources, a numbered list is auto-generated, with selection being made by choosing the item number. More ...

Jekyll : Next and Previous Post Links
March 30, 2019 18:47 David Jones MVP web jekyll next previous html links
On a blog site, a must have is the ability to click on a link to the chronologically next or previous post, particularly if the current post is is a part of a sequence of posts on a specific topic. This post show how to do this for a Jekyll blog site for all posts and for within a specific Category of posts. More ...

HSQLDB.Net : .Net interface for HSQLDB Database
March 29, 2019 22:56 David Jones MVP db hsqldb dbms dotnet csharp codemesh juggernet java
HSQLDB.Net is a library for HSQLDB that wrapper that DBMS engine’s Java classes and so provides an interface for C# Windows Forms and Console apps to existing HSQLDB databases. The library is provided on GitHub along with a sample console app that creates and exercises a database. More ...

AzureIoT-CoreUtils
March 29, 2019 01:13 David Jones MVP azedge iothub edge azure
Some PowerShell scripts for setting up containers on Win 10 IoT-Core: In particular, setting installing and uninstaling requires a local PowerShell script; that is, one copied to the device. More ...

ClickOnce Hosting on Azure
March 21, 2019 16:06 David Jones MVP appdev appdev visualstudio clickonce bobstorage
I’ve often thought that it would be useful to make an app install available for GitHub projects that developers can run to test if they want to look into the project code. Generally, repositories are not the place for built apps. Azure Blob Storage Static Web Sites office a simple platform for hosting ClickOnce app installations. You can easily use a custom domain to point the static site’s Azure URL. Also, Azure CDN enables the TLS protocol (aka SSLs) for a custom domain without having to get an external SSL certificate. Pricing for the TLS capability is based upon volume so can be quite cheap for entry level. More ...

Create a Blob Storage Static Web Site with SSLs enabled
March 03, 2019 16:06 David Jones MVP web web azure cdn https ssl tls blobstorage dns cname
Covering how to create an Azure Blob Storage Static Web Site. The second part shows how to configure https for a custom domain for the site. More ...

Creating this Blog Site
February 27, 2019 16:06 David Jones MVP web jekyll web devops markdown disqus azure github
This blog site is a customised Jekyll blog site using Markdown content authoring The layout has an expanding menu of Categories on the left with post content in the main pane on the right. For phones, the menu makes use of the glyph menu style (menu only shows when activated). The blog index page shows a summary for each page in reverse chronological order (latest first), along with its category, tags, date and author. There are also index pages for each category, and each tag. Comments for pages has been implemented using Disqus. Azure Devops is used to reposit the site content and to generate the site as an Azure Blob Storage Static Web Site. More ...

Requirements for a Blog Site
February 20, 2019 15:03 David Jones MVP web web blog jekyll markdown
My other blog site on embedded101.com has gone into archive mode. I wanted more control over content functionality and presentation. Also the editor, LiveWriter, is defunct. I liked Mardown for editing, as experienced on GitHub. I initially started creating a new blog on GitHub Pages but have now migrated that to here. In doing so I came up with some ideas for added functionality. So here are a list of those features as available through Jekyll-Markdown, the initail site and those taht I have engineered. More ...

JekyllFilter App
January 10, 2019 01:29 David Jones MVP appdev jekyll yaml dotnet windows-forms markdown csharp
This app is a C# .Net Windows Form app for authoring Markdown files specifically for a Jekyll blogsite. Includes a preview mode. Whilst its not as efficient as the editor and preview in Visual Studio Code and Visual Studio IDE, it does have the added feature of being able to capture and and translate Microsoft Word documents to Markdown, including handling images. Also it can do same for a local HTML page and for a remote web page. More ...

Space Filler devops
January 01, 2019 15:12 devops
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Introduction : What is this sequence of posts about?
September 02, 2018 11:12 David Jones MVP xam uwp xforms sqlite uwp csharp
OK so you have been creating Windows apps for ages including UWP. You have developed apps that run on the Windows desktop and the phone. You understand the rudiments of developing a modern UI app MVM etc. You understand PEM, properties events and methods for classes and GUI elements. You understand database CRUD can attach a database to an app using formal database invocation methods. You might even have mastered the Entity Framework and/or have a deep understanding of ORM. Overall, in coding terms, when confronted with a new programming context you know what you want to do and how you do with UWP or Windows Forms; you just need to do it in the new context. Xamarin Forms, bring it on! More ...

Site Calendar
September 02, 2010 11:12 David Jones MVP about azsphere
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