private void PhieuXuatTooltip_Click(object sender, EventArgs e) { if (frmCTPX == null || frmCTPX.IsDisposed) { frmCTPX = new frmRpHoaDon(); frmCTPX.MdiParent = this; frmCTPX.Show(); } else { frmCTPX.Activate(); } }
private void btnPrint_Click(object sender, EventArgs e) { frmRpHoaDon frmCTPX = new frmRpHoaDon(); frmCTPX.Show(); }