private void kodeDokterBtn_Click(object sender, EventArgs e)
 {
     Modul_Data_Dokter_PopUp dokter = new Modul_Data_Dokter_PopUp(this);
     dokter.Show();
     this.Enabled = false;
 }
 private void kodeDokter1Txt_KeyDown(object sender, KeyEventArgs e)
 {
     if (e.KeyData == Keys.Enter)
     {
         Modul_Data_Dokter_PopUp dokter = new Modul_Data_Dokter_PopUp(this);
         dokter.Show();
         this.Enabled = false;
     }
 }