An unhandled Microsoft.NET Framework exception occured in Program1.exe [10204].

我的catch块看起来像这样

Dispatcher.Invoke(new Action(() =>
            {
                EnableContent();
            }));
        }
        catch (AggregateException e)
        {
            MessageBox.Show(e.ToString());
            Dispatcher.Invoke(new Action(() =>
            {
                UpdateLoadMsg("No internet connection.",MsgType.FAIL);
            }));
        }
        catch (Exception e)
        {
            MessageBox.Show(e.ToString());
            Dispatcher.Invoke(new Action(() =>
            {
                UpdateLoadMsg("Something went wrong.",MsgType.FAIL);
            }));
        }

MessageBox永远不会显示！显然这个例外没有被捕获.如何调试？