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System.Net.Dns.GetHostByName(System.Net.Dns.GetHostName()).AddressList[0].ToString();

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string strHostName = Dns.GetHostName(); //µÃµ½±¾»úµÄÖ÷»úÃû
IPHostEntry ipEntry = Dns.GetHostByName(strHostName); //È¡µÃ±¾»úIP
string strAddr = ipEntry.AddressList[0].ToString(); //¼ÙÉè±¾µØÖ÷»úΪµ¥Íø¿¨


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