I am developing a small pos application where user can make payments and save db. Until now I stored data from one form(datagridview, textboxes etc), but now I decided to add one more form (for payments and the change). The idea is that the user call data from db in datagridview(***barcode, qty, name, price, total, vat et***c) , then press the btnpayment(***opens the 2nd form***), then the user give the the required data(give payment), then after clicking the pay button the data from two forms should be inserted into sql table
Now I want to save data from two forms into sql db in same time using same stored procedures.
Before adding the 2nd form I used this code to insert data:
               try
            {
                conn.Open();
                foreach (DataGridViewRow row in dtgartikuj.Rows)
                {
                    if (!row.IsNewRow)
                    {
                        SqlCommand cmd = new SqlCommand("insertfaturimi", conn);
                        cmd.CommandType = CommandType.StoredProcedure;
                        cmd.Parameters.Clear();
                        cmd.Parameters.Add(new SqlParameter("@nrfatures", int.Parse(txtnrfatures.Text)));
                        cmd.Parameters.Add(new SqlParameter("@klienti", cmbklienti.Text));
                        cmd.Parameters.Add(new SqlParameter("@pagesa", faturimi));
                        cmd.Parameters.Add(new SqlParameter("@nentotali", txttotali.Text));
                        cmd.Parameters.Add(new SqlParameter("@zbritje", txtzbritja.Text));
                        cmd.Parameters.Add(new SqlParameter("@totali", totali.Text));
                        cmd.Parameters.Add(new SqlParameter("@vleratvsh", textBox1.Text));
                        cmd.Parameters.Add(new SqlParameter("@nrartikujve", lblnumri.Text));
                        cmd.Parameters.Add(new SqlParameter("@kasieri", lbluser.Text));
                        cmd.Parameters.Add(new SqlParameter("@koha", DateTime.Now));
                        cmd.Parameters.Add(new SqlParameter("@barkodi", row.Cells[0].Value));
                        cmd.Parameters.Add(new SqlParameter("@emertimi", row.Cells[1].Value));
                        cmd.Parameters.Add(new SqlParameter("@sasia", row.Cells[2].Value));
                        cmd.Parameters.Add(new SqlParameter("@tvsh", row.Cells[4].Value));
                        cmd.Parameters.Add(new SqlParameter("@cmimi", row.Cells[3].Value));
                        cmd.Parameters.Add(new SqlParameter("@totalipcs", row.Cells[5].Value));
                        cmd.Parameters.Add(new SqlParameter("@vlerapatvshpcs", row.Cells[6].Value));
                        cmd.Parameters.Add(new SqlParameter("@vleraetvshpcs", row.Cells[7].Value));
                        cmd.ExecuteNonQuery();
                    }
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("Faturimi deshtoi" + ex.ToString());
            }
            finally
            {
                conn.Close();
            }
The 2nd form has some textboxes (payments and change). Now upper code I want to put into 2nd form insert button , but don't know how to link two forms together. My question is what should I change in upper code to be able to put in 2nd form insert button, then insert 2 forms in same time