how to display the BusyIndicator that hang ExpandAll () runs a RadTreeView

[bouda]

Hello ,

I am using Silverlight application and I have a Telerik RadTreeView. I like display the BusyIndicator hang the methode ExpnadAll() runs.
Note : (My RadTreeView contains many elements)

My code looks like this :

 

 

private void Button_ExpandAll(object sender, RoutedEventArgs e)

 

 

{

 

 

 

 

    this.MyBusy = true;

 

 

 

    this.MytreeView.ExpandAll();

 

 

 

    this.MyBusy = false;
}

But the BusyIndicator is never displayed.

 

Cordially
Theo

[Milan]

Hello bouda,

I am afraid that this is not possible due to the fact that the expand operation blocks the UI thread.

Regards,
Milan
the Telerik team

[Eugeniy]

just start the second thread:

radBusyIndicator.IsBusy = true;

new Thread( ()=>
{
   Dispatcher.Invoke( new Action(()=>
       {
             tree.ExpandAll();
             radBusyIndicator.IsBusy=false;
       }))
}
 ).Start();