private void btnSave_Click(object sender, EventArgs e) { if (check1 == 1) { if (CopyDAO.ValidateCopy(txtSequenceNumber.Text, txtPrice.Text)) { Copy c = new Copy(); c.BookNumber = Convert.ToInt32(txtBookNumber1.Text); c.SequenceNumber = Convert.ToInt32(txtSequenceNumber.Text); c.Type = Convert.ToInt32(txtType.Text); c.Price = Convert.ToDouble(txtPrice.Text); CopyDAO.Add(c); dgvCopies.DataSource = CopyDAO.GetDataTable(c.BookNumber); MessageBox.Show("Add Successful"); display(5); btnSave.Visible = false; check1 = 0; } } else if (check1 == 2) { if (CopyDAO.ValidateCopy(txtSequenceNumber.Text, txtPrice.Text)) { Copy c = new Copy(); c.CopyNumber = Convert.ToInt32(txtCopyNumber.Text); c.BookNumber = Convert.ToInt32(txtBookNumber1.Text); c.SequenceNumber = Convert.ToInt32(txtSequenceNumber.Text); c.Type = Convert.ToInt32(txtType.Text); c.Price = Convert.ToDouble(txtPrice.Text); CopyDAO.Edit(c); dgvCopies.DataSource = CopyDAO.GetDataTable(c.BookNumber); MessageBox.Show("Edit Successful"); display(5); btnSave.Visible = false; check1 = 0; } } }