How to speed up loading DTD through DOCTYPE

Answer 1

I think you should be able to resolve this resolver issue using XmlPreloadedResolver. However, I'm having some difficulty getting it working myself. It looks like XHTML 1.0 would be easier to support since it is a "known" DTD: XmlKnownDtds while XHTML 1.1 isn't currently "known" which means you'll have to reload a bunch of URIs.

For example:

XmlPreloadedResolver xmlPreloadedResolver = new XmlPreloadedResolver(XmlKnownDtds.Xhtml10);
xmlPreloadedResolver.Add(new Uri("http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd"), File.ReadAllBytes("D:\\xhtml11.dtd"));
xmlPreloadedResolver.Add(new Uri("http://www.w3.org/TR/xhtml-modularization/DTD/xhtml-inlstyle-1.mod"), File.ReadAllBytes("D:\\xhtml-inlstyle-1.mod"));
xmlPreloadedResolver.Add(new Uri("http://www.w3.org/TR/xhtml-modularization/DTD/xhtml-framework-1.mod"), File.ReadAllBytes("D:\\xhtml-framework-1.mod"));
xmlPreloadedResolver.Add(new Uri("http://www.w3.org/TR/xhtml-modularization/DTD/xhtml-text-1.mod"), File.ReadAllBytes("D:\\xhtml-text-1.mod"));
xmlPreloadedResolver.Add(new Uri("http://www.w3.org/TR/xhtml-modularization/DTD/xhtml-hypertext-1.mod"), File.ReadAllBytes("D:\\xhtml-hypertext-1.mod"));
xmlPreloadedResolver.Add(new Uri("http://www.w3.org/TR/xhtml-modularization/DTD/xhtml-list-1.mod"), File.ReadAllBytes("D:\\xhtml-list-1.mod"));
xmlPreloadedResolver.Add(new Uri("http://www.w3.org/TR/xhtml-modularization/DTD/xhtml-edit-1.mod"), File.ReadAllBytes("D:\\xhtml-edit-1.mod"));
xmlPreloadedResolver.Add(new Uri("http://www.w3.org/TR/xhtml-modularization/DTD/xhtml-bdo-1.mod"), File.ReadAllBytes("D:\\xhtml-bdo-1.mod"));
xmlPreloadedResolver.Add(new Uri("http://www.w3.org/TR/ruby/xhtml-ruby-1.mod"), File.ReadAllBytes("D:\\xhtml-ruby-1.mod"));
xmlPreloadedResolver.Add(new Uri("http://www.w3.org/TR/xhtml-modularization/DTD/xhtml-pres-1.mod"), File.ReadAllBytes("D:\\xhtml-pres-1.mod"));
// TODO: Add other modules here (see the xhtml11.dtd for the full list)
XmlDocument xmlDocument = new XmlDocument();
xmlDocument.XmlResolver = xmlPreloadedResolver;
xmlDocument.Load("D:\\doc1.xml");