WPF applications with non ascii project names do not work

[maxbrister]

• .NET Core Version: 5.0.100-preview.7.20366.6
• Windows version: 2004 (OS Build 19041.450)
• Does the bug reproduce also in WPF for .NET Framework 4.8?: No
• Is this bug related specifically to tooling in Visual Studio (e.g. XAML Designer, Code editing, etc...)? No

• Security issues and bugs should be reported privately, learn more via our responsible disclosure guidelines.

  Problem description:

  WPF applications with non ascii project names throw an exception when creating MainPage.xaml.

  Actual behavior:

Exception has occurred: CLR/System.UriFormatException An exception of type 'System.UriFormatException' occurred in System.Private.Uri.dll but was not handled in user code: 'Invalid URI: The Authority/Host could not be parsed.' at System.Uri.CreateThis(String uri, Boolean dontEscape, UriKind uriKind) at System.Uri..ctor(Uri baseUri, Uri relativeUri) at System.Windows.Application.LoadComponent(Object component, Uri resourceLocator) at Prj_ヺヸヺヰィヰヷゆモ.MainWindow.InitializeComponent() in C:\Users\mabriste\temp\Prj_ヺヸヺヰィヰヷゆモ\MainWindow.xaml:line 1 at Prj_ヺヸヺヰィヰヷゆモ.MainWindow..ctor() in C:\Users\mabriste\temp\Prj_ヺヸヺヰィヰヷゆモ\MainWindow.xaml.cs:line 25

Expected behavior:

Minimal repro:

dotnet new wpf --name "Prj_ヺヸヺヰィヰヷゆモ" cd "Prj_ヺヸヺヰィヰヷゆモ" dotnet run

Observe app does not start. To see exception start in a debugger.

[ryalanms]

Thanks, @maxbrister. This is now fixed.