I have a listbox which the user can drag from and drop on a scheduleview.. however I've restricted the user so that they can't drop back onto the listbox and therefore they also can't re-order the listbox.
To get this working was simple enough - however I had a bit of difficulty getting rid of the DropVisual that happens when you hover on the listbox with an item you are dragging. (The visual I am talking about is the bar that appears above/below each listboxitem to indicate where it is going to drop - I want to get rid of this because the user can't drop here - I'm surprised its not supressed when AllowDrop is set to False).
I tried setting the DropVisualProvider to null on the Listbox itself - this in turn caused loads of silent NullReferenceExceptions and caused flickering when holding an item over the ListBox. I then set the DropVisualProvider to a class which inherited from LinearDropVisualProvider and overrode the CreateDropVisual method to just return a blank StackPanel - this works flawlessly, but is there an easier/less hacky way of achieving this?
1 Answer, 1 is accepted
In order to achieve the desired approach I suggest you overwrite LinerDropVisuslStyle as follow:
<telerik:RadListBox Height="300" Width="200" ItemsSource="{Binding Cars}"> <telerik:RadListBox.Resources> <Style TargetType="telerik:LinearDropVisual" /> </telerik:RadListBox.Resources></telerik:RadListBox>I hope this would be helpful.
Regards,
Masha
Telerik