private void toolStripStatus_Loc_Click(object sender, EventArgs e)
        {
            frmTimHangTraLaiNhaCungCap tra = new frmTimHangTraLaiNhaCungCap();

            tra.ShowDialog();
        }
 private void toolStripStatus_Loc_Click(object sender, EventArgs e)
 {
     frmTimHangTraLaiNhaCungCap tra = new frmTimHangTraLaiNhaCungCap();
     tra.ShowDialog();
 }