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copied!<p>A simple example for <code>GetTcpTable2()</code> in C#.</p> <pre><code>[DllImport("iphlpapi.dll", SetLastError = true)] static extern int GetTcpTable2(byte[] pTcpTable, out int pdwSize, bool bOrder); static void Main(string[] args) { int pdwSize = 20000; byte[] buffer = new byte[pdwSize]; int res = GetTcpTable2(buffer, out pdwSize, true); if (res != 0) { buffer = new byte[pdwSize]; res = GetTcpTable2(buffer, out pdwSize, true); if (res != 0) throw new Exception(res); } int nOffset = 0; var dwNumEntries = Convert.ToInt32(buffer[nOffset]); nOffset += 4; Console.WriteLine("total connection: {0}", dwNumEntries); for (int i = 0; i < dwNumEntries; i++) { Console.WriteLine("*****************"); int st = Convert.ToInt32(buffer[nOffset]); Console.WriteLine("state: {0}", st); nOffset += 4; string LocalAdrr = buffer[nOffset].ToString() + "." + buffer[nOffset + 1].ToString() + "." + buffer[nOffset + 2].ToString() + "." + buffer[nOffset + 3].ToString(); Console.WriteLine("local ip: {0}", LocalAdrr); nOffset += 4; int LocalPort = (((int)buffer[nOffset]) << 8) + (((int)buffer[nOffset + 1])) + (((int)buffer[nOffset + 2]) << 24) + (((int)buffer[nOffset + 3]) << 16); Console.WriteLine("local port: {0}", LocalPort); nOffset += 4; string RemoteAdrr = buffer[nOffset].ToString() + "." + buffer[nOffset + 1].ToString() + "." + buffer[nOffset + 2].ToString() + "." + buffer[nOffset + 3].ToString(); Console.WriteLine("remote ip: {0}", RemoteAdrr); nOffset += 4; int RemotePort = (RemoteAdrr == "0.0.0.0") ? 0 : RemotePort = (((int)buffer[nOffset]) << 8) + (((int)buffer[nOffset + 1])) + (((int)buffer[nOffset + 2]) << 24) + (((int)buffer[nOffset + 3]) << 16); Console.WriteLine("remote port: {0}", RemotePort); nOffset += 4; int pid = BitConverter.ToInt32(buffer.Skip(nOffset).Take(4).ToArray(), 0); Console.WriteLine("pid: {0}", pid); nOffset += 4; int OffloadState = Convert.ToInt32(buffer[nOffset]); Console.WriteLine("OffloadState: {0}", OffloadState); nOffset += 4; } } </code></pre>

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