【系统操作篇】取本机内，外网IP

[C#] 纯文本查看 复制代码

//得到本机内网IP

string s = "";//定义一个变量，用来记录IP地址
System.Net.IPAddress[] addressList = System.Net.Dns.GetHostByName(System.Net.Dns.GetHostName()).AddressList;//获取IP地址列表
for (int i = 0; i < addressList.Length; i++)//遍历IP地址列表
{
    s += addressList[i].ToString() + "\n";//获得遍历到的IP地址
}
//s就是本机内网ip

[C#] 纯文本查看 复制代码

/// <summary>
/// 获得本机公网IP
/// </summary>
/// <returns>获取不到则返回空串</returns>
private static string GetIP()
{
    string tempip = "";
    try
    {
        WebRequest wr = WebRequest.Create("http://www.ip138.com/ips138.asp");
        Stream s = wr.GetResponse().GetResponseStream();
        StreamReader sr = new StreamReader(s, Encoding.Default);
        string all = sr.ReadToEnd(); //读取网站的数据

        int start = all.IndexOf("您的IP地址是：[") + 9;
        int end = all.IndexOf("]", start);
        tempip = all.Substring(start, end - start);
        sr.Close();
        s.Close();
    }
    catch
    {
    }
    return tempip;
}