protected void grdDeleteUsers_RowDataBound(object sender, GridViewRowEventArgs e) { if (e.Row.DataItem != null) { ImageButton btnDelete = (ImageButton) e.Row.Cells[0].Controls[0]; //((ImageButton)item.Cells[0].Controls[0]).Attributes.Add("onClick", "return confirm('Are you sure you want to delete this ?')"); //LinkButton link = e.Row.FindControl("lnkbtnRemoveRole") as LinkButton; if (btnDelete != null) { e.Row.ToolTip = "Delete " + e.Row.DataItem.ToString() ; //btnDelete.Attributes["onclick"] = // "return confirm('Do you want to delete " + // e.Row.DataItem.ToString() + "?' );"; // btnDelete.CommandArgument = "RemUser"; } } }If I uncomment btnDelete part I get JavaScript confirm dialog, but regardless on the answer in doesn't delete.