Changing the theme has no effect on some controls (only in release)

Description

When I try to switch themes, the style of the button doesn’t seem to change shell is work normal

` public static void ChangeTheme(string mode) { ICollection<ResourceDictionary> mergedDictionaries = Application.Current.Resources.MergedDictionaries; mergedDictionaries.Clear(); if (mode == “朱”) { mergedDictionaries.Add(new ScarletTheme()); } else { mergedDictionaries.Add(new VioletTheme());

    }
    //mergedDictionaries.Add(keyValuePairs);
    Preferences.Set("ColorMode", mode);

}

`

Steps to Reproduce

1. Create Two Theme
2. click button to changeTheme

Link to public reproduction project repository

https://github.com/ssccinng/PokeSci/tree/master/SVPokeDex

Version with bug

7.0 (current)

Last version that worked well

Unknown/Other

Affected platforms

Android

Affected platform versions

Android11

Did you find any workaround?

No response

Relevant log output

No response

[XceedBoucherS]

Hi @BretJohnson, Thanks for the informations. I upgraded to VS 17.6. I now have “7.0.86/7.0.100” with “dotnet workload list”.

Now, clearing the Application.Current.Resources.MergedDictionaries to set a new resourceDictionary works as expected : my new styles are applied. On the other hand, simply doing a Application.Current.Resources.MergedDictionaries.Clear() do not set the style back to original value.

Here’s my sample: in XAML: <Button Text=“Clear” Clicked=“Button_Clicked_1” />

  <Button Text="Set Red"
          Clicked="Button_Clicked_2"/>

  <Button Text="Set Blue"
          Clicked="Button_Clicked_3" />`

in code-behind: private void Button_Clicked_1( object sender, EventArgs e ) { Application.Current.Resources.MergedDictionaries.Clear(); }

private void Button_Clicked_2( object sender, EventArgs e ) { Application.Current.Resources.MergedDictionaries.Clear(); Application.Current.Resources.MergedDictionaries.Add( new Dictionary1() ); }

private void Button_Clicked_3( object sender, EventArgs e ) { Application.Current.Resources.MergedDictionaries.Clear(); Application.Current.Resources.MergedDictionaries.Add( new Dictionary2() ); }

ResourceDictionaries are attached to this conversation.

clicking to activate callback “Button_Clicked_1” do not reset Button Background to default value. ResourceDictionary.txt

[BretJohnson]

Hi, how can I test this service release ? I downloaded the maui-7.0.86 source code. What is the next step to create a new sample with that version of MAUI ? Thanks

@XceedBoucherS - MAUI 7.0.86 is included in Visual Studio 17.6, released yesterday. See https://devblogs.microsoft.com/visualstudio/visual-studio-2022-17-6-now-available/#comment-28752. If you upgrade to VS 17.6, you should have it. You can confirm by doing a dotnet workload list and looking for 7.0.86/7.0.100 in the manifest versions.