private void baoCaoCôngNơToolStripMenuItem_Click(object sender, EventArgs e)
{
frmBaoCaoCongNo frm = new frmBaoCaoCongNo();
frm.MdiParent = this;
frm.Show();
}
private void btnBaoCaoCongNo_ItemClick(object sender, ItemClickEventArgs e)
{
if (KiemTraTonTai("frmBaoCaoCongNo") == null)
{
foreach (Form frm1 in MdiChildren)
{
frm1.Close();
}
frmBaoCaoCongNo frm = new frmBaoCaoCongNo();
frm.MdiParent = this;
frm.Show();
}
}