如何使用FlowDocument的IDocumentPaginatorSource DocumentPaginator将FlowDocument转换为FixedDocument？

I have:

DocumentPaginator dp = ((IDocumentPaginatorSource)document).DocumentPaginator;

and:

FlowDocument document = new FlowDocument();
// create a flow document...

如何使用 DocumentPaginator 将 FlowDocument 转换为固定文档？我似乎不知道如何做到这一点。我查看的所有网站都使用 XpsWriter，如下所示：

XpsDocumentWriter writer = XpsDocument.CreateXpsDocumentWriter(xpsDoc); 
DocumentPaginator dp = ((IDocumentPaginatorSource)document).DocumentPaginator;
writer.Write(dp);

我可以编写XPS，然后取回FixedDocument，但一定有更好的方法吗？

不，似乎没有更好的办法。但您不需要将其保存到磁盘：

var paginator = ((IDocumentPaginatorSource)flowDocument).DocumentPaginator;
var package = Package.Open(new MemoryStream(), FileMode.Create, FileAccess.ReadWrite);
var packUri = new Uri("pack://temp.xps");
PackageStore.RemovePackage(packUri);
PackageStore.AddPackage(packUri, package);
var xps = new XpsDocument(package, CompressionOption.NotCompressed, packUri.ToString());
XpsDocument.CreateXpsDocumentWriter(xps).Write(paginator);
FixedDocument doc = xps.GetFixedDocumentSequence().References[0].GetDocument(true);