2015-01-07-c-and-the-spotify-web-api-part-i_001.cs

private async Task<string> GetAccessToken() 
{ 
  SpotifyToken token = new SpotifyToken();
  string postString = string.Format("grant_type=client_credentials"); 
  
  byte[] byteArray = Encoding.UTF8.GetBytes(postString); 
  string url = "https://accounts.spotify.com/api/token"; 
  
  WebRequest request = WebRequest.Create(url); 
  request.Method = "POST"; 
  request.Headers.Add("Authorization", "Basic {Encoded ClientId:ClientSecret}"); request.ContentType = "application/x-www-form-urlencoded"; 
  request.ContentLength = byteArray.Length; 
  
  using (Stream dataStream = request.GetRequestStream()) 
  { 
    dataStream.Write(byteArray, 0, byteArray.Length); 
    using (WebResponse response = await request.GetResponseAsync()) 
    { 
      using (Stream responseStream = response.GetResponseStream()) 
      { 
        using (StreamReader reader = new StreamReader(responseStream)) 
        { 
          string responseFromServer = reader.ReadToEnd(); 
          token = JsonConvert.DeserializeObject<<strong>SpotifyToken</strong>>(responseFromServer);
        } 
      } 
    } 
  } 
  
  return token.access_token; 
}