UDPクライアントのサンプル。非同期通信版（C++/CLI）

udpClient.cpp

using namespace System::Net;
using namespace System::Net::Sockets;

usc = gcnew UdpStateClass();
Socket ^listener = gcnew Socket(AddressFamily::InterNetwork, SocketType::Dgram, ProtocolType::Udp);
usc->endPnt = gcnew IPEndPoint(IPAddress::Any, 11000);//
usc->udpClt = gcnew UdpClient(11000); //接続相手

usc->udpClt->BeginReceive(gcnew AsyncCallback(this,&Clientwww::Form1::receiveCallback),usc);

//コールバック関数の定義  
void receiveCallback(IAsyncResult ^ar){
	ImageConverter ^imgconv = gcnew ImageConverter();

	UdpClient ^uc = (safe_cast<UdpStateClass^>(ar->AsyncState))->udpClt;
	IPEndPoint ^iep = (safe_cast<UdpStateClass^>(ar->AsyncState))->endPnt;

	//受信データを配列に格納
	receiveData = uc->EndReceive(ar, iep);

	//コールバック再読み込み
	usc->udpClt->BeginReceive(gcnew AsyncCallback(this,&Clientwww::Form1::receiveCallback),usc);
 }