private void button5_Click(object sender, EventArgs e)
        {
            SqlConnection conn = new SqlConnection("Data Source=MAZI-PC\PROJECTACC;Initial Catalog=programDB;Integrated Security=True");
            SqlCommand cmd = new SqlCommand("select label_sh from label_text where label_form='2' and label_form_labelID='1'", conn);
            conn.Open();
            label1.Text = cmd.ExecuteReader().ToString();
            conn.Close();

            SqlConnection conn1 = new SqlConnection("Data Source=MAZI-PC\PROJECTACC;Initial Catalog=programDB;Integrated Security=True");
            SqlCommand cmd1 = new SqlCommand("select label_sh from label_text where label_form='2' and label_form_labelID='2'", conn1);
            conn1.Open();
            label2.Text = cmd1.ExecuteReader().ToString();
            conn1.Close();

            SqlConnection conn2 = new SqlConnection("Data Source=MAZI-PC\PROJECTACC;Initial Catalog=programDB;Integrated Security=True");
            SqlCommand cmd2 = new SqlCommand("select label_sh from label_text where label_form='2' and label_form_labelID='3'", conn2);
            conn2.Open();
            label3.Text = cmd2.ExecuteReader().ToString();
            conn2.Close();
        }

label3.Text = (string) cmd2.ExecuteScalar();