using System;

using System.Reflection;

using System.Reflection.Emit;

​

public static class Program

{

    [STAThread]

    public static void Main()

    {

        const string FileName = "MyDynamicLib.dll";

        AppDomain currentDomain = AppDomain.CurrentDomain;

​

        AssemblyName assemblyName = new AssemblyName(assemblyName: "MyAssembly");

        AssemblyBuilder assemblyBuilder = currentDomain.DefineDynamicAssembly(

                                                                              name  : assemblyName,

                                                                              access: AssemblyBuilderAccess.RunAndSave

                                                                             );

        ModuleBuilder moduleBuilder = assemblyBuilder.DefineDynamicModule(

                                                                          name          : "MyModule",

                                                                          fileName      : FileName,

                                                                          emitSymbolInfo: true

                                                                         );

​

        TypeBuilder typeBuilder = moduleBuilder.DefineType(

                                                           name: "MyClass",

                                                           attr: TypeAttributes.Public | TypeAttributes.BeforeFieldInit

                                                          );

        ConstructorBuilder constructorBuilder = typeBuilder.DefineConstructor(

                                                                              attributes       : MethodAttributes.Public | MethodAttributes.HideBySig | MethodAttributes.SpecialName | MethodAttributes.RTSpecialName,

                                                                              callingConvention: CallingConventions.HasThis | CallingConventions.ExplicitThis,

                                                                              parameterTypes   : null

                                                                             );

        constructorBuilder.GetILGenerator().Emit(opcode: OpCodes.Ret);

        typeBuilder.CreateType();

​

        assemblyBuilder.Save(

                             assemblyFileName      :  FileName,

                             portableExecutableKind: PortableExecutableKinds.Required32Bit,

                             imageFileMachine      : ImageFileMachine.I386

                            );

        Console.WriteLine("Done.");

    }

}