void btnManager_Click(object sender, EventArgs e)
{
frmManager frm = new frmManager();
frmLogin frm2 = new frmLogin();
frm2.ShowDialog();
this.Hide();
this.Show();
}
private void btnOk_Click(object sender, EventArgs e)
{
frmManager frm = new frmManager();
if (this.txtMk.Text == "12345")
{
this.Hide();
frm.ShowDialog();
}
else
{
MessageBox.Show("Sai mật khẩu!");
this.txtMk.Text = "";
}
}
