public ImportControllerViewModel()
        {
            ImportContentSelectorViewModel importContentSelectorVM = new ImportContentSelectorViewModel();

            ImportContentSelectorDataContext = importContentSelectorVM;
            EventMediator.Register("CancelExcelImport", CancelExcelImport);
            ToggleButtonStateForReadingExcel(false);
            GetValidDeviceType(SelectedControllerType);
            SetSelectedDeviceTypeCode(SelectedControllerType);
            EventMediator.Register("ImportControllerViewClose", CloseViewExecute);
        }
 private void DisplayContentSelectorPage(string errorMessage)
 {
     #region 显示数据选择页面
     ConfigSection = Visibility.Collapsed;
     ImportContentSelectorViewModel importContentSelectorVM = new ImportContentSelectorViewModel();
     importContentSelectorVM.TheController  = TheController;
     importContentSelectorVM.SelfVisibility = Visibility.Visible;
     importContentSelectorVM.ImportDataSelectorVisibility = Visibility.Visible;
     importContentSelectorVM.InitilizeData(errorMessage);
     ImportContentSelectorDataContext = importContentSelectorVM;
     #endregion
 }