DropEvent is not firing

Question

I have used the CustomCanvas panel inside the ScrollViewer. i have tried to show the drop event to the CustomCanvas panel. but it doesn't gets fired.

 

Codes: 

 

Xaml:

 

<ScrollViewer x:Name="lvw_Viewer" Height="160" IsTabStop="False" Margin="10" Grid.Column="1" Grid.Row="0" Visibility="Visible" >

<converter:ScrollableCanvas Grid.Row="0" x:Name="lvw_Canvas" />

</ScrollViewer>

 

Code-Behind

this.lvw_Viewer.AllowDrop = true;

this.lvw_Canvas.AllowDrop = true;

this.lvw_Canvas.Drop += lvw_Canvas_Drop;

private void lvw_Canvas_Drop(object sender, DragEventArgs e)

{

}

 

Please let me know if you have any answers.

 

Regards,

Ganeshkumar