GdPicture.NET是目前市场上最完整的一款图片处理类SDK，该控件包含了成千上万个功能，可以浏览处理图片，也可以对文档类图片进行浏览处理，还可以进行条码的识别、图片的扫描、PDF文档处理，OCR以及OMR等多种常用功能，并且可以用于ActiveX、WInform，asp.net以及WPF等平台下，下面的代码主要讲述了如何利用该控件进行一维条形码的识别，具体如下：

 

GdPictureImaging oGdPictureImaging = new GdPictureImaging();

int imageId = oGdPictureImaging.CreateGdPictureImageFromFile("input.jpg");

if (imageId == 0)

{

   MessageBox.Show("Image Could Not Be Loaded! " + oGdPictureImaging.GetStat().ToString());

}

else

{

   //Specifying 1D barcode search types to be Code39 and Code128

   Barcode1DReaderType barcodeType = Barcode1DReaderType.Barcode1DReaderCode39 | Barcode1DReaderType.Barcode1DReaderCode128;

   //Start barcode scanning process

   if (oGdPictureImaging.Barcode1DReaderDoScan(imageId, Barcode1DReaderScanMode.BestQuality, barcodeType, false, 1) == GdPictureStatus.OK)

   {

      //obtaining the number of barcodes found

      int barcodeCount = oGdPictureImaging.Barcode1DReaderGetBarcodeCount();

      //if barcodes were found

      if (barcodeCount > 0)

      {

         //for each barcode display number, value and angle it is drawn at

         for (int i = 1; i <= barcodeCount; i++)

         {

            MessageBox.Show("Barcode No: " + i.ToString());

            MessageBox.Show("Value: " + oGdPictureImaging.Barcode1DReaderGetBarcodeValue(i).ToString());

            MessageBox.Show("Angle: " + oGdPictureImaging.Barcode1DReaderGetBarcodeSkewAngle(i).ToString());

         }

      }

      else

      {

         MessageBox.Show("No barcode detected !");

      }

      //Release detection info from memory

      oGdPictureImaging.Barcode1DReaderClear();

   }

   //Release the image

   oGdPictureImaging.ReleaseGdPictureImage(imageId);

}