Tag Archives: Extension object

XslLoadException: The type or namespace name ‘SecurityRulesAttribute’ does not exist in the namespace ‘System.Security’ (are you missing an assembly reference?)

Posted on 14 September 2012 by

While porting a project from .Net 3.5 to .Net 4 we got this weird error. The error occurs when loading an XSLT in memory. Here is the failing piece of code (simplified): private static XslCompiledTransform ReadXslt(string fname) { XslCompiledTransform xsl … Continue reading →

Posted in .Net, Development | Tagged , , | 1 Comment