private void displayMatchingResultForm()
 {
     try
     {
         User SelectedFriend = listBoxCommonFriends.SelectedItem as User;
         MatchingResultFormManager MatchingResultManager = MatchingResultFormManager.GetInstanse(LoggedInUser);
         MatchingResultManager.FriendUser = SelectedFriend;
         if (SelectedFriend != null)
         {
             MatchingResultManager.DisplayMatchingResultForm();
         }
         else
         {
             MessageBox.Show("You didn't select any friend");
         }
     }
     catch (Exception e)
     {
         MessageBox.Show(string.Format(
                             @"Error detected: {0}", e.Message));
     }
 }