我想用来存储和打印创建XPS文档。

I'd like to create an XPS document for storing and printing.

什么是（用一个简单的网格，一些里面的数据为例）在我的程序中创建XPS文档，并围绕它传递了最简单的方法？

What is the easiest way to create an XPS document (for example with a simple grid with some data inside) in my program, and to pass it around?

推荐答案

没有什么容易了。不过，这是可以做到。我有一些（遗憾的是，还是越野车）样品$ C $在我的博客c和信息，以便创建的文件在内存中。

Nothing easy about it. But it can be done. I've got some (sadly, still buggy) sample code and information on my blog for creating the document in memory.

下面是一些code我刮起了测试，封装一切（它写入FixedPages集合到一个XPS文档在内存中）。它包括code序列化的文件的字节数组，但你可以跳过这一部分，只是返回文档：

Here's some code I whipped up for testing that encapsulates everything (it writes a collection of FixedPages to an XPS document in memory). It includes code for serializing the document to a byte array, but you can skip that part and just return the document:

public static byte[] ToXpsDocument(IEnumerable<FixedPage> pages)
{
    // XPS DOCUMENTS MUST BE CREATED ON STA THREADS!!!
    // Note, this is test code, so I don't care about disposing my memory streams
    // You'll have to pay more attention to their lifespan.  You might have to 
    // serialize the xps document and remove the package from the package store 
    // before disposing the stream in order to prevent throwing exceptions
    byte[] retval = null;
    Thread t = new Thread(new ThreadStart(() =>
    {
        // A memory stream backs our document
        MemoryStream ms = new MemoryStream(2048);
        // a package contains all parts of the document
        Package p = Package.Open(ms, FileMode.Create, FileAccess.ReadWrite);
        // the package store manages packages
        Uri u = new Uri("pack://TemporaryPackageUri.xps");
        PackageStore.AddPackage(u, p);
        // the document uses our package for storage
        XpsDocument doc = new XpsDocument(p, CompressionOption.NotCompressed, u.AbsoluteUri);
        // An xps document is one or more FixedDocuments containing FixedPages
        FixedDocument fDoc = new FixedDocument();
        PageContent pc;
        foreach (var fp in pages)
        {
            // this part of the framework is weak and hopefully will be fixed in 4.0
            pc = new PageContent();
            ((IAddChild)pc).AddChild(fp);
            fDoc.Pages.Add(pc);
        }
        // we use the writer to write the fixed document to the xps document
        XpsDocumentWriter writer;
        writer = XpsDocument.CreateXpsDocumentWriter(doc);
        // The paginator controls page breaks during the writing process
        // its important since xps document content does not flow 
        writer.Write(fDoc.DocumentPaginator);
        // 
        p.Flush();

        // this part serializes the doc to a stream so we can get the bytes
        ms = new MemoryStream();
        var writer = new XpsSerializerFactory().CreateSerializerWriter(ms);
        writer.Write(doc.GetFixedDocumentSequence());

        retval = ms.ToArray();
    }));
    // Instantiating WPF controls on a MTA thread throws exceptions
    t.SetApartmentState(ApartmentState.STA);
    // adjust as needed
    t.Priority = ThreadPriority.AboveNormal;
    t.IsBackground = false;
    t.Start();
    //~five seconds to finish or we bail
    int milli = 0;
    while (buffer == null && milli++ < 5000)
        Thread.Sleep(1);
    //Ditch the thread
    if(t.IsAlive)
        t.Abort();
    // If we time out, we return null.
    return retval;
}

请注意蹩脚的线程code。不能在MTA线程做到这一点;如果你是在一个STA线程，你可以摆脱这一点。

Note the crappy threading code. You can't do this on MTA threads; if you are on an STA thread you can get rid of that as well.