Results 18 comments of TheCamel

I 've allready done this from the sample you gave mixed with datagrid extended custom control...the problem is mainly how to fill the popup list with the data from the...

I can't it's prod application too complex...and the trace is from the designer windows of visual... I will investiguate to see if i can find out more

@punker76 Microsoft Visual Studio Professional 2022 (64 bits) - Current Version 17.9.6

I tried to debug visual with another visual, but can't get any "catch". May be I have to include the mahapps project in my solution. I used the trick from...

@punker76 I avoid the crash by testing the design property private void HamburgerMenuControl_ItemInvoked(object sender, HamburgerMenuItemInvokedEventArgs args) { if (args.IsItemOptions || System.ComponentModel.DesignerProperties.GetIsInDesignMode(this) ) { return; }

In fact in handler i have the commented line below at the end that cause the exception in the main window, but not in the user control itself. I will...

i don't think it's relevant because the command is in the parent.. ChangeDisplayModeCommand item is like that ` public partial class DisplayModeItem : ObservableObject { public DisplayMode Mode { get;...

btw i found a workaround by sending a message to the parent when the IsSelected change

There is no need for that , theses properties are not involved in the problem. and there no need to invalidate the command because its allways true. IsSelected is well...

[StringManager.zip](https://github.com/user-attachments/files/15814823/StringManager.zip) file attached