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我正在尝试使用 WIA Automation，但我很难一次扫描多页。谁能给我一些关于如何实现这一目标的提示？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;
}