C++ Wrapper for VB.net

[kpax1684]

Hello Guru's:

I am trying to create a wrapper for C++ dll using a vb.net. I have manage to create a wrapper but upon calling the function
I have encounter a error: "Attempted to read or write protected memory. This is often an indication that other memory is corrupt"

Below is my code in importing the c++ dll

Imports System.Runtime.InteropServices

Public Class MYWrapper    
    <DllImport("MYtest.dll", CallingConvention:=CallingConvention.Cdecl, CharSet:=CharSet.Ansi)>
    Public Shared Sub Reset(ByVal sSection As [String], ByVal lResult As Int32)
    End Sub    
    <DllImport("MYtest.DLL", EntryPoint:="Init", SetLastError:=True, _
        CharSet:=CharSet.Ansi, ExactSpelling:=True, _
        CallingConvention:=CallingConvention.StdCall)> _
    Public Shared Sub Init(ByVal objectInstanceName As String, ByVal sPath As String, ByVal sSection As String, ByVal sTestPlanRevision As String, ByRef lResult As Int32)
    End Sub
End Class

C++ Header

extern "C" MY_API void Reset  (const char *sSection, long &lResult);
extern "C" MY_API void Init     (const char *sObjectInstanceName, const char *sPath, const char *sSection, const char *sTestplanRevision, long &lResult);

VB.net Program

 Dim IResult As Int32

        Const sOjectname As String = "C:\confg.cfg"
        Dim sError As String
        Const sProductConf As String = "Config.cfg"
        Const sOperation As String = "TEST0001"
        Const sTPRev As String = "V1"

        Try
            MYWrapper.Wrapper.Init(sOjectname, sProductConf, sOperation, sTPRev, IResult)
        Catch ex As Exception
            sError = ex.Message.ToString()
        End Try

Regards,
Newbie here