Create a nullable type dynamically

Question

I need to set the Type variable to be a nullable one. e.g.

public Type CreateNullable(Type type){
    if (type.IsValueType)
        return Nullable<type>;

    // Is already nullable
    return type;
}

I'm seeing as there are a finite amount of the ValueType, I figure I'll just create a Dictionary of all the value types as nullable, and the return that. But am keen to see if there's a smarter way.

Answer 1

public Type CreateNullable(Type type){
    if (type.IsValueType)
        return typeof(Nullable<>).MakeGenericType(type);

    // Is already nullable
    return type;
}