Amoeba.Windows.MainWindow._checkExternalBlocksMenuItem_Click C# (CSharp) Method

        private void _checkExternalBlocksMenuItem_Click(object sender, RoutedEventArgs e)
        {
            if (!_checkExternalBlocksMenuItem_IsEnabled) return;
            _checkExternalBlocksMenuItem_IsEnabled = false;

            var window = new ProgressWindow(true);
            window.Owner = this;
            window.Title = string.Format(LanguagesManager.Instance.ProgressWindow_Title, LanguagesManager.Instance.MainWindow_CheckExternalBlocks_Message);
            window.Message = string.Format(LanguagesManager.Instance.MainWindow_CheckBlocks_State, 0, 0, 0);
            window.ButtonMessage = LanguagesManager.Instance.ProgressWindow_Cancel;

            Task.Factory.StartNew(() =>
            {
                bool flag = false;

                window.Closed += (object sender2, EventArgs e2) =>
                {
                    flag = true;
                };

                _amoebaManager.CheckExternalBlocks((object sender2, int badBlockCount, int checkedBlockCount, int blockCount, out bool isStop) =>
                {
                    this.Dispatcher.Invoke(DispatcherPriority.Background, new Action(() =>
                    {
                        try
                        {
                            window.Value = 100 * ((double)checkedBlockCount / (double)blockCount);
                            window.Message = string.Format(LanguagesManager.Instance.MainWindow_CheckBlocks_State, badBlockCount, checkedBlockCount, blockCount);
                        }
                        catch (Exception)
                        {

                        }
                    }));

                    isStop = flag;
                });

                this.Dispatcher.Invoke(DispatcherPriority.Background, new Action(() =>
                {
                    try
                    {
                        window.ButtonMessage = LanguagesManager.Instance.ProgressWindow_Ok;
                    }
                    catch (Exception)
                    {

                    }
                }));
            }, TaskCreationOptions.LongRunning);

            window.Closed += (object sender2, EventArgs e2) =>
            {
                _checkExternalBlocksMenuItem_IsEnabled = true;
            };

            window.Owner = this;
            window.Show();
        }