Building amazing multi-platform solutions for iOS, Android, Mac, Linux and Windows
One of the questions that came up recently was how to make what appears to be a simple change to a Button – change the background colour of the Button to Red when it’s disabled. You’d think this would be simply a matter of changing a property on the Button but for most flavours of … Read more
I have to start this post by pointing out what a major bonus it is for .NET developers that you can build, deploy and debug an iOS application on Windows – that’s right, if you didn’t already know this, if you’re using Xamarin (now net6 ios/android), Xamarin.Forms (now dotnetmaui) or Uno Platform, you can do … Read more
Azure Functions offers two models for .NET where code is run in-process or in an isolated process. Historically .NET developers could only use the in-process model which was a mixed blessing. Whilst it meant it was easy to use the full set of bindings/triggers that were available to Azure Functions and performance was great, the … Read more
In my previous post I started a series talking about using the Uno.Extensions that the Uno Platform team have been working on. This post was supposed to be a follow-on post but instead I want to recap one of the topics in the previous post. In case you missed the announcement, version 4.3 of the … Read more
This post will be the first in a series of posts talking about Uno.Extensions, a set of libraries that the Uno team have been working on to simplify common application scenarios and make it quicker and easier to build robust multi-platform applications using the Uno Platform. The source code for this post, and subsequent posts … Read more
One of the things that we take for granted when using applications that have been designed for Windows is the subtle cues that exist for when you’re using the mouse and/or keyboards. For example when you mouse over a button, or an item in a list, the background color changes slightly. Similarly when you use … Read more
The .NET Maui team at Microsoft recently dropped Release Candidate 1, so I thought it worth taking a quick look at how it compares to both it’s predecessor, Xamarin.Forms, and the Uno Platform, which is arguably the market leader for building multi-platform application with .NET. If you missed the announcement by Microsoft, here’s a tweet … Read more
This post is going to wrap up the tutorial series on building a Hello World application using Microsoft Orleans. We’re going to be publishing the application to Azure with the Silo and Services being pushed to an Azure App Service, and linked via a Cosmos DB storage. If you want to check out the first … Read more
One of the guilty truths of software development is that despite our best efforts we never write enough tests, and seldom do we write enough automated tests. This isn’t entirely our fault because for some reason testing frameworks, particularly those for UI testing, always seem to be an after thought. In this post we’re going … Read more
In my previous post we looked at building a super-basic application that leverages Microsoft Orleans to host an instance (grain) of the IHelloWorld interface in a silo that can be invoked remotely. Unfortunately, whilst this was enough to get everything up and running, the configuration we used will only work in development. In this post … Read more
This topic is a bit of a divergence from regular content regarding building mobile, desktop and web apps using cross platform technologies like Uno and Flutter. However, you shouldn’t underestimate the complexity of building scalable backend services to support mobile applications. Whilst this post will be an introductory post on gettting started with Microsoft Orleans, … Read more
Developing cross platform applications, targeting platforms such as Android, iOS, Windows and Web, is becoming progressively easier. As .NET developers, one of the leading technologies for building cross platform apps is the Uno platform. Whilst Visual Studio, and the corresponding Uno solution templates, make it easy to create a new Uno application, setting up a … Read more
I was going through some old notes and came across some notes from a brainstorming session around contributing to open source projects. With all the different apps that we’ve worked on over the years, there wouldn’t be any that didn’t involve at least one open source project. Whether it be a framework project, like Mvvmcross, … Read more
Code sample for this post is on GitHub: AppWindowSample One of the more significant differences between building apps for mobile devices, such as iOS and Android, and desktop pcs (Windows or Mac) is the concept of windows. On a mobile device, your app typically runs full screen, or perhaps split screen on some devices, so … Read more
As we get progressively closer to the v1 release of the Windows App Sdk I thought it worth looking into the different deployment/packaging options you have. In this post we’re going to look at the startup logic for a WinUI 3 Desktop application and discuss how this relates to the different packaging options that are … Read more
As part of the announcement of Windows 11 earlier this year, Microsoft touted the ability to run Android applications on Windows. Recently this feature was made available via the Beta channel of the Windows Insider program. In this post I’m going to step through setting up the Windows Subsystem for Android (WSA), in order to … Read more
As we get closer to the first release of the Windows App SDK, Microsoft has started shipping preview releases. Whilst it’s not clear what “preview” means versus “experimental”, it does appear that the move to shipping releases via the preview channel indicates that we’re getting very close to the v1 stable release. In this post … Read more
As a UWP developer I relied heavily on the framework to deal with managing application resources such as images and string literals. You might think this is quite simple as images are just files that are packaged with your app and strings can just be put in a constants file. Where this all gets complicated … Read more
I think this will be the last in the series of posts covering validation using the INotifyDataErrorInfo interface, which can be used to expose validation error messages directly in your XAML. In this post we’re going to look at adding custom validation using both the CustomValidationAttribute and by creating our own ValidationAttribute. We’ll also look … Read more
In my previous post, Adding Validation to a XAML Control Using INotifyDataErrorInfo, I walked through adding validation to a view model using the INotifyDataErrorInfo interface and the Community Toolkit. This post will pick up where that post left off and look at how you can customise the error message that gets displayed. This will improve … Read more