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David Jones MVP

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 Samples
March 30, 2019 23:29 David Jones MVP azedge 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 azedge 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 ...