RadDropDownButton, DropDownOpening event

[Patrick]

Hello,
Is there a method to cancel the opening of the drop down in a RadDropDownButton?
If not, can you please add it as a request for this control?
Patrick

[Miro Miroslavov]

Hi Patrick,

 You can handle the DropDownOpeningEvent and if you want to stop the opening, just set e.Handled = true. That will prevent the DropDownButton from opening. 
Hope this helps.

Greetings,
Miro Miroslavov
the Telerik team

[Patrick]

Miro,
the parameter of the DropDownOpening event is an RoutedEventArgs and the RoutedEventArgs class doesn't have have an Handled property.
That's why I'm asking.
Patrick

[Tina Stancheva]

Hi Patrick,

You can cast the RoutedEventArgs to RadRoutedEventAgrs like so:

private void RadDropDownButton_DropDownOpening(object sender, RoutedEventArgs e)
{
    (e as RadRoutedEventArgs).Handled = true;
}

This will handle the event. Please give it a try and let us know if it helps.

All the best,
Tina Stancheva
the Telerik team

[Patrick]

Tina,
it works!
But you should consider changing the arguments of the DropDownOpening event to RadRoutedEventArgs for the next release of the RadControls.
Patrick