private void btn_update_Click(object sender, EventArgs e)
{
Add frm = new Add(true);
frm.MdiParent = this.MdiParent;
frm.S_ID = int.Parse(dgv.CurrentRow.Cells[0].Value.ToString());
frm.txt_name.Text = dgv.CurrentRow.Cells[1].Value.ToString();
frm.txt_address.Text = dgv.CurrentRow.Cells[2].Value.ToString();
frm.txt_phone.Text = dgv.CurrentRow.Cells[3].Value.ToString();
frm.Show();
}
private void btn_add_supplier_Click(object sender, EventArgs e)
{
Suppliers.Add frm = new Suppliers.Add();
frm.MdiParent = this;
frm.Show();
}