private void crToolStripTextBox1_Click(object sender, EventArgs e)
{
Formlogin fl = new Formlogin();
fl.Show();
this.Hide();
}
private void crToolStripTextBox1_Click_1(object sender, EventArgs e)
{
this.Close();
Formlogin fo = new Formlogin();
fo.Show();
}
private void ອອກຈາລະບບToolStripMenuItem_Click(object sender, EventArgs e)
{
Formlogin lo = new Formlogin();
this.Hide();
lo.ShowDialog();
}