Adding Validation to a XAML Control Using INotifyDataErrorInfo and the CommunityToolkit for WinUI, WPF, UWP and Uno

In my previous post on Building a XAML UserControl I made use of the CommunityToolkit.Mvvm (formerly Microsoft.Toolkit.Mvvm) NuGet package to provide the implementation of INotifyPropertyChanged used to data bind properties of our view model to the XAML controls. In this post we’re going to again use the community toolkit but this time we’re going to … Continue reading “Adding Validation to a XAML Control Using INotifyDataErrorInfo and the CommunityToolkit for WinUI, WPF, UWP and Uno”

Building a XAML UserControl for WinUI, UWP, WPF or Xamarin.Forms (.NET MAUI)

One of the powerful aspects of any XAML platform is the ability to define your own controls. In this post we’re going to look at building a user control that allows you to reuse chunks of your user experience. It doesn’t matter whether you’re using UWP, WinUI, Xamarin.Forms (.NET Maui) or the Uno Platform, the … Continue reading “Building a XAML UserControl for WinUI, UWP, WPF or Xamarin.Forms (.NET MAUI)”

Camera Preview Control for WinUI, UWP and Uno (iOS & Android) Applications

The Windows Community Toolkit provides a limited feature camera preview control for both UWP and WinUI but this doesn’t help if you want to build a cross platform application with the Uno Platform. In this post I wanted to share the very, very, very early version of a CameraPreview control for Uno. Initial support will … Continue reading “Camera Preview Control for WinUI, UWP and Uno (iOS & Android) Applications”

I am a Windows App Developer

With the recent excitement surrounding the announcement of Windows 11, there’s renewed interest in developing apps for the Windows platform. In this post we’re going to celebrate what it means to be a Windows App Developer, regardless of what framework or technology you chose. It’s not going to be an exhaustive list of options but … Continue reading “I am a Windows App Developer”

Image Resizetizer for WinUI and Uno Applications

Whilst I was working on migrating the WeatherTwentyOne app from Maui to Uno I noticed that the Maui application includes a number images as SVG files. However, in the XAML there are only ever references to PNG files. On closer inspection of the bin folder for the WinUI project I noticed that for each SVG … Continue reading “Image Resizetizer for WinUI and Uno Applications”

Converting the WeatherTwentyOne app from dotnet Maui to Uno

As the dotnet Maui team continue to churn out each preview, it’s great to see some of the showcase apps coming together. One of these is the WeatherTwentyOne app that David Ortinau has been working on. Whilst I’ve been doing a lot of work with the Uno platform recently, I haven’t been spending as time … Continue reading “Converting the WeatherTwentyOne app from dotnet Maui to Uno”

Nuget Package Explorer (nuget.info) is a PWA powered by Uno Platform

As a true demonstration of the capabilities of the Uno Platform the Nuget Package Explorer (source on GitHub / Microsoft Store) is now available at https://nuget.info. For more information read the announcement. One thing that’s not immediately obvious is that https://nuget.info is in fact a PWA. In Edge (and Chrome) you should see an icon … Continue reading “Nuget Package Explorer (nuget.info) is a PWA powered by Uno Platform”

Startup Performance, Skia and the Future of Cross Platform Apps Built with .NET

Over the last week I’ve been exploring different ways to measure the time it takes for an app to launch and be ready for the user to interact with. I’ll go into more detail on this topic in subsequent posts but I wanted first to take a bit of a side track into thinking about … Continue reading “Startup Performance, Skia and the Future of Cross Platform Apps Built with .NET”

Visual Designer, Hot Reload and Beyond

In the last couple of years we’ve seen a massive spike in interest around “Hot Reload” thanks to the popularity of frameworks such as React/React Native and more recently, Flutter. The goal of Hot Reload is to allow developers to iteratively change their application code, whilst debugging their application – this cuts down considerably the … Continue reading “Visual Designer, Hot Reload and Beyond”

How to run a WinUI 3 (Project Reunion) app on Windows 10X (Xbox and Hololens)

If you look at what Microsoft is working on with Project Reunion, it’s clear to see that they’ve set a vision to reunite the various groups of Windows developers. The aim is not to have every developer using exactly the same technology stack but rather to give every developer access to the richness of the … Continue reading “How to run a WinUI 3 (Project Reunion) app on Windows 10X (Xbox and Hololens)”

Adding Some Behaviors to Your WinUI Uno Application

With the recent release of Windows UI and support for cross platform offered by the Uno Platform, it’s going to take a little while for the various UWP libraries that we’re familiar with to be ported across. They firstly need to be ported to Windows UI and then they need a Uno build. The Uno … Continue reading “Adding Some Behaviors to Your WinUI Uno Application”

Restyling Controls in an Uno (Windows UI) Application

In my previous post, Multi-Platform PixelPerfect UI with Windows UI and the Uno Platform, I demonstrated how applications built using Project Reunion (i.e. Windows UI), coupled with the Uno Platform, could deliver an identical user experience across a variety of platforms. In this post I’m going to walk through changing the style of one of … Continue reading “Restyling Controls in an Uno (Windows UI) Application”

Getting Started with the Uno Platform (Project Reunion/WinUI)

Two years ago I posted on Getting Started with Platform Uno which focused on starting with a UWP application and extending it cross platform using the Uno Platform. For those tracking developments in the Windows development space, you’ll be aware that the 0.5 version of Project Reunion has just been released. It seem fitting to … Continue reading “Getting Started with the Uno Platform (Project Reunion/WinUI)”

A Vision for the Windows Developer Platform

Last month I posted on Building a Roadmap for Windows Development, where I discussed some of the components that need to come together in a coherent manner for the Windows developer platform of the future. These included things like running in the Windows App Container and the app having an Identity. In this post I’ll … Continue reading “A Vision for the Windows Developer Platform”

Converting Xamarin.Forms to WindowsUI and Uno: SafeArea to VisibleBoundsPadding

Converting a Xamarin.Forms application across to use WinUI + Uno is mostly straight forward as a lot of the XAML is either the same, or has an equivalent. When you’re dealing with platform specifics, one thing you might come across is the SetUseSafeArea call. For example: The Uno platform exposes the concept of safe area … Continue reading “Converting Xamarin.Forms to WindowsUI and Uno: SafeArea to VisibleBoundsPadding”

Simple WinUI + Uno Calculator

A week or so ago David from the XF/Maui team kicked of a thread on twitter challenging devs to add a simple addition to a simple calculator. I particularly liked the transition animation that Robin added, so figured I’d translate this to a WinUI+Uno platform application. I’m going to try to keep as close to … Continue reading “Simple WinUI + Uno Calculator”

Async Support for Executing Storyboards in UWP and WinUI

Sometimes I forget just how old and dated XAML is, and how little advances Microsoft has made to make it easy to work with. With the move to WinUI, hopefully we’ll start to see some much needed improvements – we’ve seen some already with the ability to define row and column definitions as a single … Continue reading “Async Support for Executing Storyboards in UWP and WinUI”

WinUI 3.0 Misconceptions

Recently I came across a twitter thread talking about WinUI 3.0 (WinUI3) and how it failed to live up to expectations. Hopefully @JaykeBirdCoding won’t mind me going through his tweets and providing my thoughts – if you get value out of this analysis, please make sure you go follow @JaykeBirdCoding! For anyone else out there … Continue reading “WinUI 3.0 Misconceptions”

What’s the correlation between .NET 5, WinUI and MAUI (Xamarin.Forms)

Over the last couple of years there have been a couple of key developments in the .NET world. However, despite a lot of rhetoric from Microsoft about building a better developer ecosystem, the reality is that the current landscape for building apps using .NET is a mess and no amount of sugar coating is going … Continue reading “What’s the correlation between .NET 5, WinUI and MAUI (Xamarin.Forms)”