Question

I have a Generic::List(String^)^ myList and some std::string & myValue values, and I need to check that the values are all contained in the list. (I don’t want to add values to the list).

What do I do in place of myList->Contains(myValue) to be sure I’m comparing the contents of the strings?

I know I can use InteropServices to marshal each element of the list.

I could convert the Generic::List to a cli::array if that would help!

Thanks
Melanie

Answer 1

From the List<T>::Contains(T) documentation (C# documentation, but that doesn’t affect anything):

This method determines equality by using the default equality comparer, as defined by the object’s implementation of the IEquatable.Equals method for T (the type of values in the list).

Because String::Equals(String^) compares the contents of the strings, all that is necessary is converting the std::string to a System::String^. You can do that with a marshal_as and you should be good.