OpenFolderDialog openFolderDialog = new OpenFolderDialog();
            Dispatcher.UIThread.InvokeAsync(async () =>
            {
                // 显示文件选择对话框并等待结果
                var mainWindow = (Application.Current.ApplicationLifetime as IClassicDesktopStyleApplicationLifetime)?.MainWindow;
                var result = await openFolderDialog.ShowAsync(mainWindow);

                // 处理选择的文件路径
                if (string.IsNullOrWhiteSpace(result))
                {
                    ep.arg = null;
                    ep.errorInfo = ErrResult.ErrorInfo_0007;
                    ep.errorNo = ErrResult.ErrorNo_0007;
                }
                else
                {
                    var arg = new JObject();
                    arg.Add("selectedPath", result);
                    ep.arg = arg;
                }
                ep.Fire();
            });
            return null;