void AddClick(object sender, EventArgs e)
{
using (promotion_manage managePage = new promotion_manage())
{
managePage.Owner = this;
managePage.manage_btn.Text = "ADD";
managePage.ShowDialog();
}
}
void EditClick(object sender, EventArgs e)
{
using (promotion_manage managePage = new promotion_manage())
{
managePage.Owner = this;
managePage.manage_btn.Text = "UPDATE";
GF.selected_id = Convert.ToInt32(btn_dgv.DGV.SelectedRows[0].Cells["promotion_id"].Value);
managePage.ShowDialog();
}
}