How to marshal a list in C#

问题

I have to send a list from C# to C++.The C# list is List<string>MyList and the C++ code accepts it as list<wstring>cppList.How to use marshalas for this.

Thanks

回答1:

It is always wiser not to use complex type marshaling between native code and managed code. In case of List, these type totally differ from each other as they have different memory layout for each item.

So the best way is to write a utility function in a native dll that accepts array of string(char*) and manually build your native List and ultimately call the desired method. It is easy for your to create wrapper of that utility function.

回答2:

C# cannot P/Invoke complex C++ types. You will have to use C++/CLI, they might have a method for marshalling it across. Else, you will have to marshal each string across individually.

回答3:

strings in C# are wstrings (2 byte unicode strings), so if what you say is true, then no special conversions are necessary.

来源：https://stackoverflow.com/questions/6532923/how-to-marshal-a-list-in-c-sharp