#728 – Dumping Out All Types in the .NET Framework

Here’s some code that looks through all assemblies in the .NET Framework directory and uses to reflection to dump out all of the types, organized by namespace.

        static void Main()
        {
            int totalNamespaces = 0;
            int totalTypes = 0;

            AppDomain.CurrentDomain.ReflectionOnlyAssemblyResolve += CurrentDomain_ReflectionOnlyAssemblyResolve;

            SortedList<string, SortedList<string, Type>> fullList =
                new SortedList<string, SortedList<string, Type>>();

            DirectoryInfo di = new DirectoryInfo(RuntimeEnvironment.GetRuntimeDirectory());
            foreach (FileInfo fi in di.GetFiles())
            {
                try
                {
                    Assembly assem = Assembly.LoadFrom(fi.FullName);

                    if (assem != null)
                    {
                        ExtractListOfTypes(assem, ref fullList, ref totalNamespaces, ref totalTypes);
                    }
                }
                catch { }
            }

            Console.WriteLine(string.Format("{0} types, in {1} namespaces", totalTypes, totalNamespaces));
            DumpTypeList(fullList);
        }

        static Assembly CurrentDomain_ReflectionOnlyAssemblyResolve(object sender, ResolveEventArgs args)
        {
            return Assembly.ReflectionOnlyLoad(args.Name);
        }

        private static void ExtractListOfTypes(Assembly assem, ref SortedList<string, SortedList<string, Type>> theList,
            ref int totalNamespaces, ref int totalTypes)
        {
            if (theList == null)
                throw new Exception("Uninitialized list");

            foreach (Type t in assem.GetTypes())
            {
                string theNamespace = t.Namespace != null ? t.Namespace : "(global)";

                // Add namespace if it's not already in list
                if (!theList.ContainsKey(theNamespace))
                {
                    theList.Add(theNamespace, new SortedList<string, Type>());
                    totalNamespaces++;
                }

                // And add type under appropriate namespace
                if (!theList[theNamespace].ContainsKey(t.FullName))
                {
                    theList[theNamespace].Add(t.FullName, t);
                    totalTypes++;
                }
            }

            return;
        }

        private static void DumpTypeList(SortedList<string, SortedList<string, Type>> theList)
        {
            foreach (KeyValuePair<string,SortedList<string,Type>> kvp in theList)
            {
                Console.WriteLine(string.Format("Namespace: [{0}]", kvp.Key));

                foreach (KeyValuePair<string, Type> kvpInner in kvp.Value)
                {
                    Console.WriteLine(string.Format("  Type: [{0}]", ((Type)kvpInner.Value).FullName));
                }

                Console.WriteLine();
            }
        }

When I run this against .NET 4.0.30319, I get a total of 40,166 types, in 657 namespaces.