private void txtSeach_TextChanged(object sender, EventArgs e) { //GET KeyWORD FORM TEXT BOOks string keywords = txtSeach.Text; if (keywords != null) { //SHow USer BAsed ON keyWords DataTable DT = userDl.Saerch(keywords); dgvUsers.DataSource = DT; } else { //ELSE SHOW ALL USERS DataTable DT = userDl.Select(); dgvUsers.DataSource = DT; } }