C#解析ip.ws.126.net的IP查询地区接口数据（使用正则表达式匹配获取所需数据）

var lo="北京市", lc="北京市"; var localAddress={city:"北京市", province:"北京市"}

string url = "http://ip.ws.126.net/ipquery?ip=106.120.159.68";
string result="";
WebRequest wrt = null;
WebResponse wrp = null;
try
{
    wrt = WebRequest.Create(url);
    wrt.Credentials = CredentialCache.DefaultCredentials;
    wrp = wrt.GetResponse();
    StreamReader sr = new StreamReader(wrp.GetResponseStream(), Encoding.Default);
    string html = sr.ReadToEnd();
    string pattern = "{city:"(?.*?)", province:"(?.*?)"}";
    Regex regex = new Regex(pattern, RegexOptions.None);
    Match match = regex.Match(html);
    //城市
    string city= match.Groups["key1"].Value;
    //省份
    string province=match.Groups["key2"].Value;
}
catch (Exception){}
finally
{
if (wrp != null)
    wrp.Close();
if (wrt != null)
    wrt.Abort();
}

1、需要匹配获取的内容，使用(?.*?)代替，其中key为键。

2、双引号要用转义斜杠。