Apples to: Nevron Diagram for .NET
How to ask a user for confirmation when he or she deletes a diagram shape?
To ask the user for confirmation when he or she deletes a shape from the diagram, you should do the following things:
[C#]
// Subscribe to the OnNodeRemoving event of the NDrawingDocument:
nDrawingDocument1.EventSinkService.NodeRemoving += new ChildNodeCancelEventHandler(EventSinkService_NodeRemoving);
// Place the needed code in the event handler:
void EventSinkService_NodeRemoving(NChildNodeCancelEventArgs args)
{
if(MessageBox.Show("Remove ?", "Question", MessageBoxButtons.YesNo, MessageBoxIcon.Question) !=
DialogResult.Yes)
{
args.Cancel = true;
}
}
[VB.NET]
' Subscribe to the OnNodeRemoving event of the NDrawingDocument:
AddHandler NDrawingDocument1.EventSinkService.NodeRemoving, AddressOf EventSinkService_NodeRemoving
' Place the needed code in the event handler:
Private Sub EventSinkService_NodeRemoving(args As NChildNodeCancelEventArgs)
If MessageBox.Show("Remove ?", "Question", MessageBoxButtons.YesNo, MessageBoxIcon.Question) <> DialogResult.Yes Then
args.Cancel = True
End If
End Sub
Article ID: 15, Created On: 9/29/2010, Modified: 5/5/2011