private void button2_Click(object sender, EventArgs e)
{
employee_purchase su = new employee_purchase();
su.purchase_return = this;
//Console.Write("lalallaal");
su.type = "购货退货单";
su.ShowDialog();
}
private void button2_Click_1(object sender, EventArgs e)
{
employee_purchase su = new employee_purchase();
su.sale = this;
Console.Write("lalallaal");
su.type = "销货订单";
su.ShowDialog();
}