Problem to save assembly via System.Reflection.Emit.

[hdv212]

Hi I've used from this link to define a new simple type and then save to disk with .dll extension via this code :

private void button1_Click(object sender, EventArgs e)
{
AssemblyName asmName = new AssemblyName();
asmName.Name = "HelloWorld";

        AssemblyBuilder asmBuilder = Thread.GetDomain().DefineDynamicAssembly(asmName, AssemblyBuilderAccess.RunAndSave);
        ModuleBuilder modBuilder = asmBuilder.DefineDynamicModule("HelloWorld");
        TypeBuilder typeBuilder = modBuilder.DefineType("Hello", TypeAttributes.Public, typeof(object), new Type\[\] { typeof(IHello) });

        MethodBuilder methodBuilder = typeBuilder.DefineMethod("SayHello", MethodAttributes.Private | MethodAttributes.Virtual, typeof(void), new Type\[\] { typeof(string) });

        typeBuilder.DefineMethodOverride(methodBuilder, typeof(IHello).GetMethod("SayHello"));
        ILGenerator il = methodBuilder.GetILGenerator();

        // string.Format("Hello, {0} World!", toWhom)
        il.Emit(OpCodes.Ldstr, "Hello, {0} World!");
        il.Emit(OpCodes.Ldarg\_1);
        il.Emit(OpCodes.Call, typeof(string).GetMethod("Format", new Type\[\] { typeof(string), typeof(object) }));

        // Console.WriteLine("Hello, World!");
        il.Emit(OpCodes.Call, typeof(Console).GetMethod("WriteLine", new Type\[\] { typeof(string) }));
        il.Emit(OpCodes.Ret);

        Type type = typeBuilder.CreateType();
        IHello hello = (IHello)Activator.CreateInstance(type);

        hello.SayHello("Emit");
        asmBuilder.Save(asmName.Name + ".dll");

}

it saved my dll on disk, but when i open it via Reflector, it does not have anything! just have a module named 'RefEmit_OnDiskManifestModule' can anybody help me where is my problem and how to solve it ? thanks in advance

[Luc Pattyn]

Hi, IMO the problem is with the DefineDynamicModule(), where you should use an overload and specify the DLL file there too. :)

Luc Pattyn [Forum Guidelines] [Why QA sucks] [My Articles]

---

I only read code that is properly formatted, adding PRE tags is the easiest way to obtain that.

---