wpf

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### Description I want to use [ReactiveMarbles.ObservableEvents.SourceGenerator](https://www.nuget.org/packages/ReactiveMarbles.ObservableEvents.SourceGenerator/) in a VSTO project. The UI in the project is implemented using WPF. As long as a WPF User Control is added to...

Snailya

Add more System.Xaml tests

10

Had these lying around from 5 years ago. Can now send in after #138 ###### Microsoft Reviewers: [Open in CodeFlow](https://portal.fabricbot.ms/api/codeflow?pullrequest=https://github.com/dotnet/wpf/pull/8203)

hughbe

please add Task event to controls

4

It's 2024 now... Please don't let the button.click event to handle async/await task with `async void` signature.

ali50m

Calling a wpf lib with reflection raised TargetInvocationException

4

### Description .NET8 visual studio 2022 ### Reproduction Steps 1. Create a wpf custom control lib or user control lib 2. Add nuget Microsoft.Xaml.Behaviors or any nuget which can be...

NeverMorewd

Very slow performance due to internal WPF deferred resource reference list

14

* .NET Core Version: 5.0.5 * Windows version: 10.0.19042 * Does the bug reproduce also in WPF for .NET Framework 4.8?: Yes * Is this bug related specifically to tooling...

oatkins

Improve performance of DynamicResource usages

2

Fixes Issue #4468 ## Description The currently used implementation to keep track of DynamicResource usages is suboptimal as the list can grow quite large and scanning gets very expensive. That's...

batzen

Implicit style lookup not working correctly when control is part of a template

7

### Description Implicit style lookup not working correctly when control is part of a template. That's because `FindImplicitStyleResource` sets a `boundaryElement` which causes implicit style lookup to bubble up to...

batzen

Certain MSBuild configuration causes _wpftmp build output directories to not be deleted after each build

34

.NET Core 3.1.201 Windows 10 build 18363 **Problem description:** Certain MSBuild configuration causes the compiler to leave behind directories with a `_wpftmp` suffix after a build completes. The problem seems...

nathan-alden-hp

Strange Behavior in Touch Application using WPF

6

### Description In my touch application developed with WPF, I've encountered a perplexing behavior when interacting with buttons within an ItemsControl. Occasionally, when touching down on one button, the click...

Joebu

DataGrid row validation does not triggered unless the focus moved out of the row immediately.

2

### Description I have a DataGrid row validation rule that validates the value in each cell. However, row validation is triggered only when the focus moves out of the row....

zewditu