How to pass a generic property as a parameter to a function?

delegate RET FunctionDelegate<T, RET>(T t);

void func<T, RET>(FunctionDelegate function, T param, ...)
{
    ...
    return function.Invoke(param);
}

value = obj.GetType().GetProperty("Foo").GetAccessors()[0].Invoke(obj,null);

obj.GetType().GetProperty("Foo").GetAccessors()[1].Invoke(obj,new object[]{value});

delegate RET FunctionDelegate<T, RET>(T t);

void func<T, RET>(FunctionDelegate<T,RET> function, T param, ...)
{
    ...
    return function(param);
}

SomeClass obj = new SomeClass();
func<SomeClass,int>(delegate(SomeClass o){return o.Foo;},obj);

static void Method<T, U>(this T obj, Expression<Func<T, U>> property)
        {
            var memberExpression = property.Body as MemberExpression;
            //getter
            U code = (U)obj.GetType().GetProperty(memberExpression.Member.Name).GetValue(obj, null);
            //setter
            obj.GetType().GetProperty(memberExpression.Member.Name).SetValue(obj, code, null);
        }

DbComputerSet cs = new DbComputerSet();
cs.Method<DbComputerSet, string>(set => set.Code);