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David Jones MVP

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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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 dotnetcoreiot 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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