protected void BtnAccept_Click(object sender, EventArgs e) { //temp UserCtrl userCtrl = new UserCtrl(); List <int> idList = new List <int>(); foreach (GridViewRow row in UserRequestGrid.Rows) { CheckBox cb = (CheckBox)row.FindControl("CheckBox1"); if (cb != null && cb.Checked) { idList.Add(Convert.ToInt32(row.Cells[5].Text)); } } userCtrl.approveRequest(idList); UserRequestGrid.DataBind(); }