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What is the best and working way to change the theme of a WinUI 3 App using RadioButtons programatically?
I tried searching the web but couldn't find best ways to do so.
See the Remarks section at Application.RequestedTheme Property
Ok, so how do I restart the app programmatically?
I think it is better to change the RequestedTheme of the container control
For example with a StackPanel :
(it must have Background="{ThemeResource ApplicationPageBackgroundThemeBrush}" to be refreshed automatically)
How do I save the settings of the theme and other stuff?
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(179.20000000000002, 34%, 27%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EXY%3C/text%3E%3C/svg%3E)
ApplicationData.Current.LocalSettings
If you give the user an option to pick a theme that's part of app UI, you must save the setting in the app data and apply it when the app is restarted. (For more info about app settings, see Store and retrieve settings and other app data).
I am getting an exception. Please Help!
I am using WinUI 3 Windows App SDK Unpackaged app
@Hemanth B Any updates?
Yes, I actually figured out a way by adding this Background="{ThemeResource ApplicationPageBackgroundThemeBrush}" to the main parent control.