RadExpander animation with Windows11 theme

[François]

Hi Support team,

even if animation is disabled, the expander is still showing some sort of animation when Windows 11 theme is applied.

This can be reproduced with Telerik samples.

Is there a way to remove that animation entirely so that the content gets displayed immidiateley ?

François

[Dinko]

Hello François,

To remove the fade-in/fade-out animation of the RadExpander control, you can extract the ControlTemplate of RadExpander for the Windows11 theme, located in the Telerik.Windows.Controls.xaml file. In the ControlTemplate, you can remove the FadeOutContentBorderStoryboard and FadeInContentBorderStoryboard animations which are located in the IsExpanded trigger.

You can see this at the attached sample solution.

Regards,
Dinko
Progress Telerik

[François]

Well done.

Thanks for this top notch answer !