XML vs. JSON Serialization in Server Side Code - Snippet 1

SPRestCall.cs

HttpClient client = new HttpClient();

// create the endpoint
StringBuilder requestUri = new StringBuilder(ServiceResourceId)
  .Append("/_api/web/lists/getbytitle('Tasks')/items")
  .Append("?$select=Id,Title,Status,Priority,AssignedTo/Name&$expand=AssignedTo");
  
// crete the request
HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, requestUri.ToString());

// add request headers to authenticate & request XML from the service
request.Headers.Accept.Add(new MediaTypeWithQualityHeaderValue("application/xml"));
request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", await GetAccessToken());

// execute the request & get the response back as a string
HttpResponseMessage response = await client.SendAsync(request);
string responseString = await response.Content.ReadAsStringAsync();