private void đăngNhậpToolStripMenuItem_Click(object sender, EventArgs e)
{
if (!CheckForm("frmDangNhap"))
{
Form frm = new frmDangNhap();
frm.MdiParent = this;
frm.Show();
}
else
{
ActivateForm("frmDangNhap");
}
//đăngNhậpToolStripMenuItem.Enabled = false;
}
private void frmMain_Load(object sender, EventArgs e)
{
QuyenDangNhap(false);
if (!CheckForm("frmDangNhap"))
{
Form frm = new frmDangNhap();
frm.MdiParent = this;
frm.Show();
}
else
{
ActivateForm("frmDangNhap");
}
}