private void btn_QID_Click(object sender, EventArgs e)
{
if (tb_Query.Text == "")
{
bs_OrderList.DataSource = service.GetAllOrder();
bs_OrderList.ResetBindings(false);
}
else
{
var ans = service.Query("ID", tb_Query.Text);
bs_OrderList.DataSource = ans;
bs_OrderList.ResetBindings(false);
}
}