private void button2_Click(object sender, EventArgs e)
{
this.Hide();
var LU = new KierowcyUpForm();
LU.Closed += (s, args) => this.Close();
LU.Show();
}
private void KrcBtn_Click(object sender, EventArgs e)
{
this.Hide();
var Loo = new KierowcyUpForm();
Loo.Closed += (s, args) => this.Close();
Loo.Show();
}