Returning a collection or array

[riderman42]

Hello,

I am not sure where to post this question since it's kind of a crossover question

I currently have a c# program (this might be a vb.net program in the future) that calls a c++ dll

using the following in the c# program

[DllImport("foo. dll")]

public static extern int ChangeIt(string strId, string strTheValue);


In c++ I have


__declspec(dlle xport) int ChangeIt(char *pszId, char *pszTheValue)
{

code......

return 1;

}

What I want to do is do the same type of extern call but return either a collection or an array

the current c++ function does an api call to get a collection and is put into an array for use in another part of the application.

I assume a collection more efficient since .net can handle collections

but it really does not matter which format I bring it back in.

Could someone shed some light on how to return a collection and/or an array to.net from c++ using the etern and dllexport method?

I am sort of aware of the [In, out] method for arrays but could use a better understanding

Thanks
Jake