Assembly.GlobalAssemblyCache Property http://blogs.msdn.com/junfeng/archive/2006/07/27/680539.aspxOnce you have an assembly loaded, you can use Assembly.GlobalAssemblyCache Property to determine if the assembly is loaded from GAC or not. I am surprised that not many people know about this property.en-USCommunityServer 2.1 SP1 (Build: 61025.2)Interesting Finds: July 27, 2006http://blogs.msdn.com/junfeng/archive/2006/07/27/680539.aspx#681088Fri, 28 Jul 2006 06:24:41 GMT91d46819-8472-40ad-a661-2c78acb4018c:681088Jason Haleyre: Assembly.GlobalAssemblyCache Property http://blogs.msdn.com/junfeng/archive/2006/07/27/680539.aspx#684079Mon, 31 Jul 2006 16:41:22 GMT91d46819-8472-40ad-a661-2c78acb4018c:684079EssamWhen I develop DLLs , I usally add some helper files in the same folder for the DLL, like XSLT and config files for example. <br> <br>Adding the DLL to the GAC makes me unable to do that any more , I wonder if you can advice about this issuere: Assembly.GlobalAssemblyCache Property http://blogs.msdn.com/junfeng/archive/2006/07/27/680539.aspx#684600Tue, 01 Aug 2006 02:18:54 GMT91d46819-8472-40ad-a661-2c78acb4018c:684600junfengWhy can't you embed those files as resources inside the assembly?