private void buttonDelete2_Click(object sender, EventArgs e) { c.id = int.Parse(textSearch.Text); bool success = c.DeleteGroups(c); if (success = true) { MessageBox.Show("Record Deleted....."); } else if (success = false) { MessageBox.Show("Record is not deleted....."); } DataTable dt = c.Select(); dataGridViewGroups.DataSource = dt; }