Hi Ihardtke,

You may disable this prompt by hooking into the BeforeRowsDeleted event handler of the UltraGrid and access the DisplayPromptMsg property exposed from within the event arguments, you will need to set this property to false.

Example:

void ultraGrid1_BeforeRowsDeleted(object sender, BeforeRowsDeletedEventArgs e)
        {
            e.DisplayPromptMsg = false;
        }

If you have any further questions, please let me know.

Sincerely,
Chris K
Developer Support Engineer
Infragistics, Inc.
www.infragistics.com/support