C # dynamic + System.Reflection.Emit = don't mix?
Why does the code look like this:
using System;
using System.Reflection;
using System.Reflection.Emit;
class Program
{
static Type CreateDynamicType()
{
var typeBuilder = AppDomain.CurrentDomain
.DefineDynamicAssembly(
name: new AssemblyName("FooAssembly"),
access: AssemblyBuilderAccess.Run)
.DefineDynamicModule("FooModule")
.DefineType("Foo", TypeAttributes.Class);
typeBuilder
.DefineDefaultConstructor(MethodAttributes.Public);
var method = typeBuilder
.DefineMethod("SayHello", MethodAttributes.Public);
var il = method.GetILGenerator();
il.EmitWriteLine("Hello!");
il.Emit(OpCodes.Ret);
return typeBuilder.CreateType();
}
static void Main()
{
var type = CreateDynamicType();
dynamic instance = Activator.CreateInstance(type);
instance.SayHello();
}
}
Throws an exception:
Unhandled Exception: Microsoft.CSharp.RuntimeBinder.RuntimeBinderException: 'object' does not contain a definition for "SayHello"
But calls through the reflection API work fine. Any ideas?
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