# API Changes on .NET

It is now possible to capture the output of `xsl:result-document` to any kind of `XmlDestination` by nominating a user-written instance of `IResultDocumentHandler`, which works in a similar way to the `OutputURIResolver` on Java.

Saxon 8.9 is built using IKVM 0.32.0.0, which introduces some changes to the way that dynamic loading works. This may affect stylesheets or queries that use dynamically loaded extension functions. The main impact is that it is no longer possible to load extension functions written in Java, other than functions implemented within Saxon, or functions that map to classes in the standard JDK class library as implemented in GNU Classpath. Calls to extension functions written in .NET languages are unaffected. For more details on dynamic loading in IKVM, see Jeroen Frijters' 9 Feb 2007 blog entry at http://weblog.ikvm.net/.

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