Problem with execeutenonquery while using radio button?

#region Insert
            if (con.State == ConnectionState.Closed)
            {
                con.Open();
            }
            else
                con.Close();
            if (button2.Text == "Add")
            {
                CustomUnLock();
                textBox1.ReadOnly = false;
                button2.Text = "Save";
            }
            else
            {
                if (radioButton1.Checked == true)
                {
                    cmd = new SqlCommand("PPrimaryInsert", con);
                    cmd.CommandType = CommandType.StoredProcedure;
                    cmd.Parameters.Add(new SqlParameter("@grnum", textBox1.Text));
                    cmd.Parameters.Add(new SqlParameter("@std", int.Parse(txtstd.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PStname", textBoxAlphabetic1.Text));
                    cmd.Parameters.Add(new SqlParameter("@PRollno", int.Parse(txtrolnum.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PConcesion", radioButton1.Text));
                    cmd.Parameters.Add(new SqlParameter("@PAdmissionfee", int.Parse(txtadmission.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PSchoolfee", int.Parse(txtschool.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PTermfee", int.Parse(txtterm.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PMisalliancefee", int.Parse(txtmisalliance.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PUniformfee", int.Parse(txtuniform.Text)));
                    if (radioButton3.Checked == true)
                        cmd.Parameters.Add(new SqlParameter("@Pbus", radioButton3.Text));
                    else
                        cmd.Parameters.Add(new SqlParameter("@Pnonbus", radioButton4.Text));

                    cmd.Parameters.Add(new SqlParameter("@PSchoobusfee", int.Parse(txtbus.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PActlAdmissionfee", int.Parse(txtadmissionamt.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PActlSchoolfee", int.Parse(txtschoolamnt.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PActlTermfee", int.Parse(txttermamnt.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PActlMisalliancefee", int.Parse(txtmisallianceamnt.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PActlSchoobusfee", int.Parse(txtbusamnt.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PActlUniformfee", int.Parse(txtuniformamnt.Text)));

                    int i = cmd.ExecuteNonQuery();
                    label16.Text = i + "Record Added Successfully...";
                    CustomClear();
                }
                else
                {

                    cmd = new SqlCommand("PPrimaryInsert", con);
                    cmd.CommandType = CommandType.StoredProcedure;
                    cmd.Parameters.Add(new SqlParameter("@grnum", textBox1.Text));
                    cmd.Parameters.Add(new SqlParameter("@std", int.Parse(txtstd.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PStname", textBoxAlphabetic1.Text));
                    cmd.Parameters.Add(new SqlParameter("@PRollno", int.Parse(txtrolnum.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PNonconcesion", radioButton2.Text));
                    cmd.Parameters.Add(new SqlParameter("@PAdmissionfee", int.Parse(txtadmission.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PSchoolfee", int.Parse(txtschool.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PTermfee", int.Parse(txtterm.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PMisalliancefee", int.Parse(txtmisalliance.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PUniformfee", int.Parse(txtuniform.Text)));
                    if (radioButton3.Checked == true)
                        cmd.Parameters.Add(new SqlParameter("@Pbus", radioButton3.Text));
                    else
                        cmd.Parameters.Add(new SqlParameter("@Pnonbus", radioButton4.Text));

                    cmd.Parameters.Add(new SqlParameter("@PSchoobusfee", int.Parse(txtbus.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PActlAdmissionfee", int.Parse(txtadmissionamt.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PActlSchoolfee", int.Parse(txtschoolamnt.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PActlTermfee", int.Parse(txttermamnt.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PActlMisalliancefee", int.Parse(txtmisallianceamnt.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PActlSchoobusfee", int.Parse(txtbusamnt.Text)));
                    cmd.Parameters.Add(new SqlParameter("@PActlUniformfee", int.Parse(txtuniformamnt.Text)));

                    int i = cmd.ExecuteNonQuery();
                    label16.Text = i + "Record Added Successfully...";
                    CustomClear();
                }

            }

#endregion