How to use the function of VC++ (dll)?
the function have a parameter is structure
and this structure have member is structure Array

Firstly, try and import the DLL into visual studio by adding it via the references. If it doesn't add, then you'll have to do it the complicated way.

Create a new class called "NativeMethods.cs"

create a new method:

[DllImport("dllToRead.dll")]
public static extern <return_type> <function_name>(<params>);

If you need to manually cast the parameters, you'll need to do marshalling. This is all covered in extensive detail in the MSDN library.

Regards,

Dom