private void frmMain_Load(object sender, EventArgs e)
{
frmDangNhap dangnhap = new frmDangNhap();
dangnhap.ShowDialog();
if (UserLogin != null)
{
// KiemTraQuyen();
}
else
{
//khong dang nhap thoat phan mem
this.Close();
}
}
private void mnuDangNhap_Click(object sender, EventArgs e)
{
frmDangNhap dangnhap = new frmDangNhap();
dangnhap.ShowDialog();
}