Question

我正在尝试编写XPS文档。目前＆＃34; doc＆＃34;是一个FixedDocument，有一个PageContent对象，其子类型为FixedPage，有7个UIElements，因为它是＆＃34; Children＆＃34;。它扔了

error Message "Compressed part has inconsistent data length."

这是一个样本

    private FixedDocument Document;
    private DocumentViewer Viewer;
    private FixedPage Page;
    private PageContent Content;

首先，我成功地重置了文档和查看器：

    private void ResetDocument()
    {
        Viewer = new DocumentViewer();
        Document = new FixedDocument();
    }

我创建了一个单一的新页面（我为多个页面获得了相同的错误）

    public void NewPage()
    {
        Page = new FixedPage();
        Content = new PageContent();
        ((IAddChild)Content).AddChild(Page);
        Document.Pages.Add(Content);
    }

我已成功将UIElements添加到页面

    public void AddVisualToPage(UIElement element)
    {
        Page.Children.Add(element);
    }

然后我在这部分得到了错误。

    public void SaveCurrentDocument(string name)
    {
        Viewer.Document = Document;
        string xpspath = Path.Combine(ReportsPath, name + ".xps");

        var doc = (FixedDocument) Viewer.Document;
        var xpsd = new XpsDocument(xpspath, FileAccess.ReadWrite);

        XpsDocumentWriter xw = XpsDocument.CreateXpsDocumentWriter(xpsd);
        xw.Write(doc); //THIS IS THE LINE WHERE I GET THE ERROR
        xpsd.Close();
    }

这是我的堆栈跟踪。

   at MS.Internal.IO.Packaging.CompressStream.UpdateUncompressedDataLength(Int64 dataLength)
   at MS.Internal.IO.Packaging.CompressStream.Read(Byte[] buffer, Int32 offset, Int32 count)
   at MS.Internal.IO.Zip.Crc32Calculator.CalculateStreamCrc(Stream stream)
   at MS.Internal.IO.Zip.ProgressiveCrcCalculatingStream.CalculateCrc()
   at MS.Internal.IO.Zip.ZipIOLocalFileBlock.UpdateReferences(Boolean closingFlag)
   at MS.Internal.IO.Zip.ZipIOBlockManager.SaveContainer(Boolean closingFlag)
   at MS.Internal.IO.Zip.ZipIOBlockManager.SaveStream(ZipIOLocalFileBlock blockRequestingFlush, Boolean closingFlag)
   at MS.Internal.IO.Zip.ZipIOFileItemStream.Flush()
   at MS.Internal.IO.Packaging.CompressStream.Flush()
   at MS.Internal.IO.Packaging.CompressStream.Dispose(Boolean disposing)
   at System.IO.Stream.Close()
   at MS.Internal.IO.Zip.ZipIOLocalFileBlock.Dispose(Boolean disposing)
   at MS.Internal.IO.Zip.ZipIOBlockManager.RemoveLocalFileBlock(ZipIOLocalFileBlock localFileBlock)
   at MS.Internal.IO.Zip.ZipArchive.DeleteFile(String zipFileName)
   at System.IO.Packaging.ZipPackage.IgnoredItemHelper.Delete(ValidatedPartUri partUri)
   at System.IO.Packaging.ZipPackage.CreatePartCore(Uri partUri, String contentType, CompressionOption compressionOption)
   at System.IO.Packaging.Package.CreatePart(Uri partUri, String contentType, CompressionOption compressionOption)
   at System.Windows.Xps.Packaging.XpsManager.GeneratePart(ContentType contentType, Uri partUri)
   at System.Windows.Xps.Packaging.XpsManager.GenerateUniquePart(ContentType contentType)
   at System.Windows.Xps.Packaging.XpsDocument.AddFixedDocumentSequence()
   at System.Windows.Xps.Serialization.XpsPackagingPolicy.AcquireXmlWriterForFixedDocumentSequence()
   at System.Windows.Xps.Serialization.XpsSerializationManager.AcquireXmlWriter(Type writerType)
   at System.Windows.Xps.Serialization.ReachHierarchySimulator.SimulateBeginFixedDocumentSequence()
   at System.Windows.Xps.Serialization.ReachHierarchySimulator.BeginConfirmToXPSStructure(Boolean mode)
   at System.Windows.Xps.Serialization.XpsSerializationManager.SaveAsXaml(Object serializedObject)
   at System.Windows.Xps.XpsDocumentWriter.SaveAsXaml(Object serializedObject, Boolean isSync)
   at System.Windows.Xps.XpsDocumentWriter.Write(FixedDocument fixedDocument)

我很困惑这个问题是什么......我完全不明白为什么它会压缩任何东西，（我猜XPS使用压缩数据？）数据长度如何不一致。

感谢您的帮助！

在Write（）上抛出错误“压缩部分具有不一致的数据长度”的XpsDocumentWriter

0 个答案: