C# 使用WIA自动化扫描多个页面

我在玩WIA自动化，一次只能扫描多个页面。有谁能给我一些关于如何做到这一点的提示吗？下面是我用来扫描文档/图像的代码示例：

public static byte[] ScanImage(int colourType, string formatId, int dpi)
    {
      _dialog = new CommonDialogClass();
      _scanner = _dialog.ShowSelectDevice(WIA.WiaDeviceType.ScannerDeviceType, false, false);     

  foreach (Property item in _scanner.Items[1].Properties)
  {
    switch (item.PropertyID)
    {
      case 6146: //4 is Black-white,gray is 2, colour 1   
        SetProperty(item, colourType);
        break;
      case 6147: //dots per inch/horizontal    
        SetProperty(item, dpi);
        break;
      case 6148: //dots per inch/vertical          
        SetProperty(item, dpi);
        break;
      case 6149: //x point where to start scan   
        SetProperty(item, 0);
        break;
      case 6150: //y-point where to start scan  
        SetProperty(item, 0);
        break;
      case 6151: //horizontal extent        
        SetProperty(item, (int)(8.5 * 100));
        break;
      case 6152: //vertical extent             
        SetProperty(item, 11 * 100);
        break;
    }
  }

  try
  {
    TempPath = System.IO.Path.GetTempPath() + "temp" + DateTime.Now.Ticks;

    ScannedImage = (ImageFile)_scanner.Items[1].Transfer(formatId);
    //System.IO.File.Delete(TempPath);
    ScannedImage.SaveFile(TempPath);

    //Convert image to binary
    Vector vector = ScannedImage.FileData;
    byte[] imgBin = (byte[])vector.get_BinaryData();
    ScannedImageBinary = (byte[])vector.get_BinaryData();

    //ImageFromFile = Image.FromFile(TempPath);
  }
  catch (Exception ex)
  { }

  return ScannedImageBinary;
}

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看来你在说C

看看这个答案：

我编写了一个小型库，用于在ADF扫描仪上扫描多个文档：