private void textEditSsn_EditValueChanged(object sender, EventArgs e)
 {
     if (textEditSsn.Text.Length == 11)
     {
         if (radioGroupType.SelectedIndex == 0)
         {
             doctor = bllAdmin.CheckDoctor(textEditSsn.Text);
             if (doctor == null)
             {
                 LabelNotFound("doctor");
             }
             else
             {
                 LabelFound <Doctor>(doctor);
             }
         }
         else if (radioGroupType.SelectedIndex == 1)
         {
             member = bllAdmin.CheckMember(textEditSsn.Text);
             if (member == null)
             {
                 LabelNotFound("member");
             }
             else
             {
                 LabelFound <Member>(member);
             }
         }
         else
         {
             admin = bllAdmin.CheckAdmin(textEditSsn.Text);
             if (admin == null)
             {
                 LabelNotFound("admin");
             }
             else
             {
                 LabelFound <Admin>(admin);
             }
         }
     }
     else
     {
         LabelDefault();
     }
 }