Is there any way to pass the setter of a property to a delegate?

Question

I know this question has already been asked, but this time I have two additional constraints:

1. Reflection cannot be used.

2. I don't want to pass a wrapper around a property's setter. I want to pass the setter itself:

   // NO! NO! NO!
   myObject.MyMethod(value => anotherObject.AnotherProperty = value);
   

Answer 1

Define this helper function(You'll need to add the error checking):

Action<TObject,TValue> GetSetter<TObject,TValue>(Expression<Func<TObject,TValue>> property)
{
    var memberExp=(MemberExpression)property.Body;
    var propInfo=(PropertyInfo)memberExp.Member;
    MethodInfo setter=propInfo.GetSetMethod();
    Delegate del=Delegate.CreateDelegate(typeof(Action<TObject,TValue>),setter);
    return (Action<TObject,TValue>)del;
}

And use it like this:

Action<MyClass,int> setter=GetSetter((MyClass o)=>o.IntProperty);

This is not exactly what you want(It uses reflection), but probably as close as you'll get. The returned delegate is the setter itself, no wrapper.