Scott comments here on a utility XmlUrlResolver he wrote to load schemas embedded as resources in .NET assemblies that contain includes between them. This is a powerful feature, and it's nice to see how the XML stack was open to extension in ways like this.
FWIW, I did something like this a few years back (2002, actually) to load XSLTs embedded as resources for the original NUnitReport task for NAnt. Here's the code I wrote back then, which is pretty similar to Scott's code (except that I used an explicit URI schema):
///
/// Loads the XSLT Transform
///
///
/// This method will load the file specified
/// through the the xslfile attribute, or
/// the default transformation included
/// as a managed resource.
///
///
private XslTransform LoadTransform()
{
XslTransform xslt = new XslTransform();
if ( XslFile != null )
{
xslt.Load(XslFile);
} else
{
XmlResolver resolver = new LocalResXmlResolver();
Stream stream =
(Stream)resolver.GetEntity(new Uri(XSL_DEF_FILE), null, null);
XmlTextReader reader = new XmlTextReader(XSL_DEF_FILE, stream);
xslt.Load(reader, resolver);
}
return xslt;
}
///
/// Custom XmlResolver used to load the
/// XSLT files out of this assembly resources.
///
internal class LocalResXmlResolver : XmlUrlResolver
{
const string SCHEME_MRES = "mres";
///
/// Loads the XSLT file
///
///
///
///
///
public override object GetEntity(Uri absoluteUri, string role, Type objToReturn)
{
if ( absoluteUri.Scheme != SCHEME_MRES )
{
// we don't know how to handle this URI scheme....
return base.GetEntity(absoluteUri, role, objToReturn);
}
Assembly thisAssm = Assembly.GetExecutingAssembly();
string filename = absoluteUri.Segments[absoluteUri.Segments.Length - 1];
return thisAssm.GetManifestResourceStream(filename);
}
