C# 创建printbatch以打印多个流程文档

如何成批打印多个流程文档？ 下面的代码应该打印不同的文档，但打印相同的文档。只有在xps打印机上打印时，此示例才能正常工作

var printDialog = new PrintDialog();
if(printDialog.ShowDialog() == true) {      
  var xpsDocumentWriter = PrintQueue.CreateXpsDocumentWriter(printDialog.PrintQueue);

  foreach(var person in persons) {
    var doc = Application.LoadComponent(new Uri("Template.xaml", UriKind.Relative)) as FlowDocument;
      doc.DataContext = persons;
      var paginator = ((IDocumentPaginatorSource)doc).DocumentPaginator;          
      xpsDocumentWriter.Write(paginator);
    }
  }

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这些都是线程问题。分配

DataContext

后，确保线程处理其等待队列：

Dispatcher.CurrentDispatcher.Invoke(
        DispatcherPriority.SystemIdle, new DispatcherOperationCallback(_ => null), null);

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这些都是线程问题。分配

DataContext

后，确保线程处理其等待队列：

Dispatcher.CurrentDispatcher.Invoke(
        DispatcherPriority.SystemIdle, new DispatcherOperationCallback(_ => null), null);