Update to WinAppSDK 1.2 and WinUIEx 2.0

[mikebattista]

Describe the bug

Update to the latest releases.

To Reproduce

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Additional context

No response

Applies to the following platforms:

• WinUI
• WPF
• UWP

About your setup

• Visual Studio Version:
• Template Studio Wizard Version:
• Windows Build:

[mikebattista]

WinUIEx 2.0 has a bug that causes unpackaged apps to crash when using PersistenceId. Need to update to a newer version with the fix when it's ready.

[SoftEntwickler]

Even WinUIEx 2.1 does not work in unpackaged(None) apps.
As I can see WinUIEx uses Windows.Storage.ApplicationData.Current.LocalSettings for saving and loading window size and position. But unpackaged apps can't use Windows.Storage.ApplicationData.Current.LocalSettings.

[mikebattista]

@dotMorten is that true?

[dotMorten]

No, see dotMorten/WinUIEx#95 (comment)

[SoftEntwickler]

Then the TemplateStudio needs to be updated to use WinUIEx.WindowManager.PersistenceStorage, right?

[dotMorten]

@SoftEntwickler yes. This feature was specifically added last week by request of template studio - give them a chance to catch up.