private void InvestigationList_KeyUp(object sender, System.Windows.Input.KeyEventArgs e)
 {
     if (e.Key == Key.Enter)
     {
         if (Keyboard.IsKeyDown(Key.LeftShift) || Keyboard.IsKeyDown(Key.RightShift))
         {
             //   MessageBox.Show("Shift + Enter pressed");
             //  return true;
             e.Handled = true;
             var child = Globalized.FindChildByType <TextBox>(InvestigationList);
             child.Text = "";
             child.Focus();
             // this.btnSaveDoctor.IsDefault = false;
         }
     }
 }