调用百度api输出地址和城市查询出具体坐标系

在工作中遇到标题的内容，不知道如何写，后来我的领导写了一套代码，感觉很是厉害，特在此收藏，留作纪念

    public static string GetResponse(string address, string region)
    {
        address = System.Web.HttpUtility.UrlEncode(address);
        region = System.Web.HttpUtility.UrlEncode(region);
        string url = string.Format("http://api.map.baidu.com/place/v2/search?query={0}&region={1}&scope={2}&output=xml&ak=这里填写你申请的ak", address, region, "2");        
        System.Net.HttpWebRequest request;
        request = (System.Net.HttpWebRequest)WebRequest.Create(url);

        HttpWebResponse response = (HttpWebResponse)request.GetResponse();
        //打印返回值  
        Stream stream = response.GetResponseStream();   //获取响应的字符串流  
        StreamReader sr = new StreamReader(stream); //创建一个stream读取流  
        string responseString = sr.ReadToEnd();   //从头读到尾，放到字符串html  
        return responseString;
    }