1 /// <summary> 2 /// 获取ip地址 3 /// </summary> 4 /// <returns></returns> 5 public string GetLocalIP() 6  { 7 try 8  { 9 string HostName = Dns.GetHostName(); //得到主机名 10 IPHostEntry IpEntry = Dns.GetHostEntry(HostName);11 for (int i = 0; i < IpEntry.AddressList.Length; i++)12  {13 //从IP地址列表中筛选出IPv4类型的IP地址 14 //AddressFamily.InterNetwork表示此IP为IPv4, 15 //AddressFamily.InterNetworkV6表示此地址为IPv6类型 16 if (IpEntry.AddressList[i].AddressFamily == AddressFamily.InterNetwork)17  {18 return IpEntry.AddressList[i].ToString();19  }20  }21 return "";22  }23 catch (Exception ex)24  {25 MessageBox.Show("获取本机IP出错:" + ex.Message);26 return "";27  }28 }