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I'm trying to improve the performance of our application. We have a lot of Activator.CreateInstance calls that are causing some grief. We instantiate a lot of classes based on an interface ( ITabDocument ) and after looking around I thought of using this code: The code is no better (in fact marginally slower) than using the Activator.CreateInstance code we had. public static Func<T> CreateInstance<T>(Type objType) where T : class, new() { var dynMethod = new DynamicMethod("DM$OBJ_FACTORY_" + objType.Name, objType, null, objType); ILGenerator ilGen = dynMethod.GetILGenerator(); ilGen.Emit(OpCodes.Newobj, objType.GetConstructor(Type.EmptyTypes)); ilGen.Emit(OpCodes.Ret); return (Func<T>)dynMethod.CreateDelegate(typeof(Func<T>)); } I'm wondering why this is, all I'm doing is: ITabDocument document = CreateInstance<ITabDocument>(Type.GetType("[Company].Something")); Is there a better way of creating objects which would assist with the above? It's a little hard when you're not sure of the concrete type.

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