private void doanhThuDịchVụToolStripMenuItem1_Click(object sender, EventArgs e)
{
frmDoanhThuDichVu dtdv = new frmDoanhThuDichVu();
dtdv.MdiParent = this;
dtdv.Show();
}
private void báoCáoDoanhThuDịchVụToolStripMenuItem_Click(object sender, EventArgs e)
{
frmDoanhThuDichVu frmDTDV = new frmDoanhThuDichVu();
frmDTDV.Show();
}
