I am able to start my Windows MAUI app using an URI, and I can get the URI itself. But, it appears that a NEW instance of the app is being created. This is not ideal for me -- if my app is already ...

I'm trying to work out how to package a WinUI desktop application in MSIX. We don't want to upload to Windows Store or anything, just to be able to give people an installer (much like a .msi file),...

I'm looking for a way to use WinUI with a visual Editor, but can't find one. And i'm not sure where to start on writing my own. As of today (December 11th, 2023), there is no Win UI Visual Ed...

I just start learning WinUI 3.0 and can't find any information in google or books like Learn WinUI 3.0 how to set default window size of application. I know in UWP it can be like ApplicationView.Pr...

The .NET RID changed from .NET8, so I modified the PropertyGroup in the csproj file as follows. <PropertyGroup> <OutputType>WinExe</OutputType> <TargetFramework>net8.0-win...

I can't find how to easily create a custom control in which I can insert content in xaml. For example, I would like my control to contain a grid that I style somehow and then insert content into it...

I want to create a custom Entry with a completely personalized visual. For this, I created a CustomEntryHandler to modify the native view of the windows platform but I can't override the basic wind...

I have bound button command to one RelayCommand from MVVM Toolkit, which executes some function, with following: [RelayCommand] private async void SomeMethod() {} I want to prevent multiple clicks...

A WinUI 3 question about accessing the UI thread from another thread, say, a Timer tick. In WinForms that was extremely easy with a (someControl).InvokeRequired and .Invoke. In WPF we had to add .D...

I need to get a reference to the parent Microsoft.UI.Xaml.Window for a Control. Is there a way to do that in Project Reunion 0.5? Window.Current does not work in a desktop app.

I'm trying to show a popup to edit a brand in my app but it doesn't show up. Function where I call the Dialog: private async Task EditBrandAsync(Brand brand) { var dialog = new ContentDialogs.Edit...

I'm triyng to make a login system in my UWP (WinUI3) app and when I try to lauch de Login Content Dialog it crashes throwing this error: System.ArgumentException: 'Value does not fall within the e...

When I use WebView2 control in a UWP project with WinUI 3.0 and run the app, the webpage inside WebView2 control is not displayed. Instead, the app displays the following message that takes me to M...

I was trying to use WinUI so I installed the plugin Microsoft.UI.Xaml (2.4.2) from Nuget and followed the instructions which says add This <XamlControlsResources xmlns="using:Microsoft.UI.X...

In my WinUI 3.0 - UWP project, I have a WebView2 control that displays a simple html as follows. But when I call the following javascript code using ExecuteScriptAsync (as shown below), I get the f...

I'll try to summarize my issue as concisely as I can: I have a legacy C++ project that uses WinAPI to create and manage UI elements. I want to replace this with a more modern framework that...

With .NET Core 3 in preview, it is possible to create a WinForms or WPF "desktop application" on the .NET Core platform. Using XAML islands, it is possible to host UWP controls in a WPF applicatio...