title: System.Net.Http.HttpClient does not contain a definitions for DownloadData
body: <p>i want to get lyrics using web api but it has an error of 'System.Net.Http.HttpClient' does not contain a definition for 'DownloadData' and no extension method 'DownloadData' accepting a first argument of type 'System.Net.Http.HttpClient' could be found (are you missing a using directive or an assembly reference?)</p>
  
  <p>here my code</p>
  
  <pre><code>internal static class LyricsFetcher
  {
      internal static String GetLyrics(String Artist, String Title)
      {
          byte[] responseData;
  
          string URL;
  
          URL = "http://api.metrolyrics.com/v1/search/lyrics/?find=" + Artist + "%20" + Title + "&amp;X-API-KEY=1234567890123456789012345678901234567890";
  
          HttpClient wClient = new HttpClient();
          responseData = wClient.DownloadData(URL); // error
          UTF8Encoding utf8 = new UTF8Encoding();
          String Lyrics = utf8.GetString(responseData,0,responseData.Length);
          return Lyrics;
      }
  }
  </code></pre>