private void button2_Click(object sender, EventArgs e)
 {
     /* if (radioButton1.Checked == true || radioButton2.Checked == true || radioButton4.Checked == true)
     {
         AREGISTRATION a2 = new AREGISTRATION();
         this.Hide();
         a2.Show();
     }
     if (radioButton3.Checked == true)
     {
         SREGISTRATION r1 = new SREGISTRATION();
         this.Hide();
         r1.Show();
     }*/
     AREGISTRATION s2 = new AREGISTRATION();
     this.Hide();
     s2.Show();
 }
 private void button3_Click(object sender, EventArgs e)
 {
     AREGISTRATION r2 = new AREGISTRATION();
     this.Hide();
     r2.Show();
 }