using YiiGo.Imaging.Basic;
     using YiiGo.Imaging.Basic.Core;
     using YiiGo.Imaging.Basic.Codec;
     using YiiGo.Imaging.PDF;

     namespace YG__Test
     {
     public partial class Form1 : Form
     {
     public Form1()
     {
     InitializeComponent();
     }

     public static string FolderName = "c:/";

     private void button1_Click(object sender, EventArgs e)
     {
     string fileName = FolderName + "Sample.pdf";

     YGDocument doc = YGFile.OpenDocumentFile(fileName, new PDFDecoder());
     //use PDFDecoder open a pdf file List<BaseDocument> baseDocs = doc.SplitDocument(1);

     int index = 0;

     foreach (BaseDocument baseDoc in baseDocs)
     {
     // YGImage reimage = (YGImage)baseDoc.GetPage(0).ToImage();
     index++;

     YGFile.SaveDocumentFile((YGDocument)baseDoc, "c:/reDoc" + index + ".pdf", new PDFEncoder());
     }

     }