LINQ Expression Conversion / Concat from Int to string

Question

I want to Concat two expressions for the final expression

Expression>

So I have created expression belwo code

Answer 1

To expand on Richard Deeming's answer even though it's a little late.

Expression.Call(
    typeof(string).GetMethod("Concat", new[] { typeof(object), typeof(object) }),
    Expression.Convert(cons, typeof(object)),
    Expression.Convert(memberExpression, typeof(object))
);

That should work just fine while allowing the signature to stay as you have it.