I'm having problems using RasEnumConnections.

 [DllImport("rasapi32.dll", CharSet=CharSet.Auto)]
 public static extern int RasEnumConnections(ref RASCONN[] Connections, ref
int dwSize, out int TotalConnections);

 [StructLayout(LayoutKind.Sequential, Pack=4,  CharSet=CharSet.Auto)]
 public struct RASCONN {
  public int  dwSize;
  public IntPtr  hrasconn;
  [MarshalAs(UnmanagedType.ByValTStr,  SizeConst=RAS_MaxEntryName + 1)]
  public string szEntryName;
  [MarshalAs(UnmanagedType.ByValTStr,  SizeConst=RAS_MaxDeviceType + 1)]
  public string szDeviceType;
  [MarshalAs(UnmanagedType.ByValTStr,  SizeConst=RAS_MaxDeviceName + 1)]
  public string szDeviceName;
  [MarshalAs(UnmanagedType.ByValTStr,  SizeConst=MAX_PATH)]
  public string szPhonebook;
  public int dwSubEntry;
  public Guid guidEntry;
  public int dwSessionId;
  public int dwFlags;
  public Guid luid;
 }

That's how I have it all defined.

   RASCONN[] rascon = new RASCONN[]{};
   int dwSize = Marshal.SizeOf(typeof(RASCONN));
   int TotalConnections;
   int Result = RasEnumConnections(ref rascon, ref dwSize, out
TotalConnections);

But I'm getting an "Invalid size" message (the result) when I call it as I
do immediately above.

Anyone have any idea what I'm doing wrong?

Thanks!
James Hancock