合併xps文檔使最後一個重複

Question

將多個XPS文檔合併爲一個時遇到問題。當我合併它們時，結果xps包含重複的最後一個XPS文檔。這裏是我的功能合併（Modified version of this question）：

public XpsDocument CreateXPSStream(List<XpsDocument> ListToMerge) 
    { 
     var memoryStream = new MemoryStream(); 
     Package container = Package.Open(memoryStream, FileMode.Create); 
     string pack = "pack://temp.xps"; 
     PackageStore.RemovePackage(new Uri(pack)); 
     PackageStore.AddPackage(new Uri(pack), container); 

     XpsDocument xpsDoc = new XpsDocument(container, CompressionOption.SuperFast, "pack://temp.xps"); 
     FixedDocumentSequence seqNew = new FixedDocumentSequence(); 
     foreach (var sourceDocument in ListToMerge) 
     { 
      FixedDocumentSequence seqOld = sourceDocument.GetFixedDocumentSequence(); 
      foreach (DocumentReference r in seqOld.References) 
      { 
       DocumentReference newRef = new DocumentReference(); 
       ((IUriContext)newRef).BaseUri = ((IUriContext)r).BaseUri; 
       newRef.Source = r.Source; 
       seqNew.References.Add(newRef); 
      } 
     } 
     XpsDocumentWriter xpsWriter = XpsDocument.CreateXpsDocumentWriter(xpsDoc); 
     xpsWriter.Write(seqNew); 
     //xpsDoc.Close(); 
     //container.Close(); 
     return xpsDoc; 
    } 

結果去的DocumentViewer並顯示給用戶。

Answer 1

我創建了以下功能，它適用於我。

public void MergeXpsDocument(string newFile, List<XpsDocument> sourceDocuments) 
    { 
     if (File.Exists(newFile)) 
     { 
      File.Delete(newFile); 
     } 

     XpsDocument xpsDocument = new XpsDocument(newFile, System.IO.FileAccess.ReadWrite); 
     XpsDocumentWriter xpsDocumentWriter = XpsDocument.CreateXpsDocumentWriter(xpsDocument); 
     FixedDocumentSequence fixedDocumentSequence = new FixedDocumentSequence(); 

     foreach(XpsDocument doc in sourceDocuments) 
     { 
      FixedDocumentSequence sourceSequence = doc.GetFixedDocumentSequence(); 
      foreach (DocumentReference dr in sourceSequence.References) 
      { 
       DocumentReference newDocumentReference = new DocumentReference(); 
       newDocumentReference.Source = dr.Source; 
       (newDocumentReference as IUriContext).BaseUri = (dr as IUriContext).BaseUri; 
       FixedDocument fd = newDocumentReference.GetDocument(true); 
       newDocumentReference.SetDocument(fd); 
       fixedDocumentSequence.References.Add(newDocumentReference); 
      } 
     } 
     xpsDocumentWriter.Write(fixedDocumentSequence); 
     xpsDocument.Close(); 
    }