private void btnPT_Click(object sender, EventArgs e) { frmPhieuThuePhong PT = new frmPhieuThuePhong(); PT.ShowDialog(); }
private void LapPhieuThuePhongToolStripMenuItem_Click(object sender, EventArgs e) { frmPhieuThuePhong Child = new frmPhieuThuePhong(); Child.MdiParent = this; Child.Show(); }