protected void gvMyreview_SelectedIndexChanged(object sender, EventArgs e) { //delete review int index = gvMyreview.SelectedIndex; string id = gvMyreview.DataKeys[index].Value.ToString(); DBServiceReference.Service1Client client = new DBServiceReference.Service1Client(); client.DeleteReview(Convert.ToInt32(id)); Response.Redirect(Request.RawUrl); }