Hello,

Well it really depends on your scenario. I guess that you want to delete the currently selected node when a button is clicked?

You can use the confirm javascript methods for that - it will display a "Yes" / "No" dialogue, e.g. here is a good example for that

for example:

<asp:Button runat="server" ID="DeleteButton" OnClickClick="confirm('Do you want to delete selected node')" Text="Delete Selected Node" />

You can also see a forum thread that employs a similar technique (although for another component) here:

http://forums.infragistics.com/forums/p/6830/28551.aspx