private void simpleButton2_Click(object sender, EventArgs e) { try { if (cnx.State == ConnectionState.Closed) { cnx.Open(); } if (textBox1.Text != "") { SqlCommand cmd = new SqlCommand(); cmd.Connection = cnx; cmd.CommandText = "insert into tribunal(tribunal) values(@tribunal)"; SqlParameter p = new SqlParameter("@tribunal", textBox1.Text); cmd.Parameters.Add(p); cmd.ExecuteNonQuery(); MessageBox.Show("تم اظافة المحكمة بنجاح", "الاظافة", MessageBoxButtons.OK); cnx.Close(); this.Close(); history.AddHistory(" المحكمة", "الاظافة", textBox1.Text); cnx.Close();; ma.gettribunal(); this.Close(); } else { MessageBox.Show("يجب ملا الخانة", "تنبيه", MessageBoxButtons.OK, MessageBoxIcon.Information); } } catch (Exception ex) { MessageBox.Show(ex.Message); } }