private void ActivateSelectedClientAndRefreshView()
 {
     try
     {
         ClientBase client = listBox1.SelectedItem as ClientBase;
         ActiveClient = client;
         if (client != null)
         {
             client.Activate();
             RefreshClientView();
         }
         else
         {
             this.Hide();
         }
     }
     catch (Exception ex)
     {
         Debug.WriteLine(ex.Message);
         Debug.WriteLine(ex.StackTrace);
     }
 }