Small class to work around AppDomain not existing in WinRT - allows enumeration of assemblies in the package -http://social.msdn.microsoft.com/Forums/en-US/winappswithcsharp/thread/6e8d015b-4c3b-4e1a-9884-d986ba5935c0/

AppDomain.cs

        private sealed class AppDomain
        {
            public static AppDomain CurrentDomain { get; private set; }

            static AppDomain()
            {
                CurrentDomain = new AppDomain();
            }

            public Assembly[] GetAssemblies()
            {
                return GetAssemblyListAsync().Result.ToArray();
            }

            private async System.Threading.Tasks.Task<IEnumerable<Assembly>> GetAssemblyListAsync()
            {
                var folder = Windows.ApplicationModel.Package.Current.InstalledLocation;

                List<Assembly> assemblies = new List<Assembly>();
                foreach (Windows.Storage.StorageFile file in await folder.GetFilesAsync())
                {
                    if (file.FileType == ".dll" || file.FileType == ".exe")
                    {
                        AssemblyName name = new AssemblyName() { Name = file.Name };
                        Assembly asm = Assembly.Load(name);
                        assemblies.Add(asm);
                    }
                }

                return assemblies;
            }
        }

Better write
AssemblyName name = new AssemblyName() { Name = Path.GetFileNameWithoutExtension(file.Name) };
at line 24