private void loadDuLieu()
{
dgvDanhSach.Rows.Clear();
DataTable dt = HoaDonControl.layDanhSach();
lblHoadon.Text = lblHoadon.Text + dt.Rows.Count.ToString();
for (int i = 0; i < dt.Rows.Count; ++i)
{
string trangthai = "";
if (Convert.ToInt16(dt.Rows[i]["TrangThai"].ToString()) == 1) trangthai = "Chưa Thanh Toán";
else trangthai = "Đã Thanh Toán";
dgvDanhSach.Rows.Add(new object[] { dt.Rows[i]["MaHD"], dt.Rows[i]["TenNV"], dt.Rows[i]["TenKH"],
String.Format("{0:dd/MM/yyyy}", dt.Rows[i]["NgayLap"]), trangthai });
}
}
