C# 获取主机IP地址

public static string GetIP()  
        {  
            string strAddr = "";  
            try  
            {  
                string strHostName = System.Net.Dns.GetHostName();  
                System.Net.IPHostEntry ipEntry = System.Net.Dns.GetHostEntry(strHostName);  
                foreach (IPAddress _ipaddress in ipEntry.AddressList)  
                {  
                    if (_ipaddress.AddressFamily.ToString().ToLower() == "internetwork")  
                    {  
                        strAddr = _ipaddress.ToString();  
                        break;  
                    }  
                }  
  
                Log.Debug("  IP:" + strAddr);  
            }  
            catch (System.Exception e)  
            {  
                Log.Error("  Get IP Address Error:" + e.Message);  
            }  
  
            return strAddr;  
        }