Getting Cities list in the form of DataSet using Zomato API

HttpWebRequest webRequest =
WebRequest.Create("https://api.zomato.com/v1/cities.xml")
as HttpWebRequest;

HttpWebResponse webResponse = null;

webRequest.Headers.Add("X-Zomato-API-Key", "KeyValue");
//you can get KeyValue by registering with Zomato.
webRequest.Method = "GET";

webResponse = (HttpWebResponse)webRequest.GetResponse();

if (webResponse.StatusCode == HttpStatusCode.OK)

{

StreamReader responseReader = new
StreamReader(webResponse.GetResponseStream());

string responseData = responseReader.ReadToEnd();

XmlDocument doc = new XmlDocument();

doc.LoadXml(responseData);

XmlNodeReader xmlReader = new XmlNodeReader(doc);

DataSet ds = new DataSet();

ds.ReadXml(xmlReader);

return ds;

}