private void button2_Click(object sender, EventArgs e)
{
biletbul formkapaA = new biletbul();
formkapaA.Close();
Form1 btt = new Form1();
btt.Show();
this.Hide();
}
private void button1_Click(object sender, EventArgs e)
{
Class1.pnrno = textBox1.Text.ToString();
biletbul tb = new biletbul();
tb.Close();
biletduzenle bt = new biletduzenle();
bt.Show();
this.Hide();
}