Hi All I am trying to use the function GetExtendedTcpTable, I looked on the
MSDN found the C++ definition and tried to convert it but it does not seem
to be working, it returns 87 which is = ERROR_INVALID_PARAMETER
I have checked the parameters it looks correct to me.
Any IDEAS?
Imports System.Runtime.InteropServices
'* C++ Conversions Aliases.
Imports DWORD = System.UInt32
Imports BOOL = System.Boolean
Imports PDWORD = System.IntPtr
Imports CLONG = System.UInt32
Imports Pointer = System.IntPtr
Public Function GetTCPdata()
Dim MIB_TCPROW As New MIB_TCPROW_OWNER_PID
Dim AF_INET As Integer = 2 ' = IP version 4
Dim IptrToTableSize As IntPtr =
Marshal.AllocHGlobal(Marshal.SizeOf(GetType(System .UInt32)))
Dim RetVal As DWORD
'Get the Size of the TCP TABLE
RetVal = GetExtendedTcpTable(IntPtr.Zero, IptrToTableSize, 0, AF_INET, 5, 0)
Dim iptrToTcpTableArray As IntPtr
'Allocate space in the pointer
iptrToTcpTableArray = Marshal.AllocHGlobal(Marshal.SizeOf(IptrToTableSiz e))
' Trying to get a Pointer to the TCP table
RetVal = GetExtendedTcpTable(iptrToTcpTableArray, IptrToTableSize, 0,
AF_INET, 5, 0)
MessageBox.Show(RetVal.ToString & ", TCP Table Size " &
IptrToTableSize.ToString)
Marshal.FreeHGlobal(iptrToTcpTableArray)
Return 0
End Function
'*** API DECLARE ****
'C++ Original
'DWORD GetExtendedTcpTable(
' PVOID pTcpTable,
' PDWORD pdwSize,
' BOOL bOrder,
' ULONG ulAf,
' TCP_TABLE_CLASS TableClass,
' ULONG Reserved
');
'VB.net Conversion ?
Public Declare Unicode Function GetExtendedTcpTable Lib _
"IPHLPAPI.DLL" _
( _
ByVal pTcpTable As IntPtr, _
ByVal pDwSize As Integer, _
ByVal bOrder As BOOL, _
ByVal ulAf As Integer, _
ByVal TCP_TABLE_CLASS As Integer, _
ByVal Reserved As Integer) As Integer
