problem in using win32 DLL in c#

[Ryanivanka]

hi ,everyone ,please check my codes,i am really confused.

the codes of win32 dll is as follows:
*************** ********the win32 DLL writen in c++************ *****


extern "C"
{
__declspec(dlle xport) WCHAR* __stdcall getWNameOfCompo nnet();

}

WCHAR name[100];

BOOL APIENTRY DllMain( HMODULE hModule,
DWORD ul_reason_for_c all,
LPVOID lpReserved
)
{
return TRUE;
}


WCHAR* getWNameOfCompo nnet(){
return name;
}

*************** *************** *************** ***
*************** ******the win32 .def file*********** *

EXPORT
getWNameOfCompo nnet @1
*************** *************** *************** ********


and I try to use the export in c#,but I can not get anything from
getprocaddress( ,.)

**************i mport the prototype of api**
[DllImport ("kernel32.dll" ,EntryPoint="Lo adLibraryW",
CharSet=CharSet .Unicode,Callin gConvention=Cal lingConvention. StdCall,
SetLastError =true)]
public extern static IntPtr LoadLibrary(Str ing lpFileName);

[DllImport("Kern el32", EntryPoint = "GetProcAddress ",
CharSet=CharSet .Unicode ,CallingConvent ion =
CallingConventi on.StdCall,
SetLastError = true)]
public extern static IntPtr GetProcAddress(
IntPtr handle,
[MarshalAs(Unman agedType.LPWStr )]string funcname);

*************** *******
**************g et the export from my dll***
public delegate string getwname();

private static Delegate GetAddress(IntP tr dllModule, string
functionname, Type t)
{

IntPtr addr = GetProcAddress( dllModule, functionname);
//addr is always zero.why?

if (addr == IntPtr.Zero )
return null;
else
return Marshal.GetDele gateForFunction Pointer(addr, t);
}

public String callGetWname()
{
IntPtr huser32 =IntPtr.Zero ;
huser32 = LoadLibrary("my .dll");//the huser32 is ok,the
dll is loaded.
getwname mygetw = (getwname)GetAd dress(huser32,
"getWNameOfComp onnet",
typeof(getwname ));

}

*************** *************** **


the getProcAddress( ..) doesn't work.Where am i wrong?