public async Task <List <Session> > GetSessions()
{
List <Session> sessionList = new List <Session>();
string errorMessage = String.Empty;
try
{
// Obtain information for communicating with the service:
Office365ServiceInfo serviceInfo = await Office365ServiceInfo.GetSharePointServiceInfoAsync(
AppSettings.SharePointHostResourceId,
AppSettings.SharePointSessionListUri);
if (!serviceInfo.HasValidAccessToken)
{
throw new Exception("Unable to get SharePoint ServiceInfo");
}
// Create a URL for retrieving the data:
string[] queryParameters = new string[]
{
"select=title,start,end,description,code"
};
string requestUrl = String.Format(CultureInfo.InvariantCulture,
"{0}/items?{1}",
serviceInfo.ApiEndpoint,
String.Join("&", queryParameters));
// Prepare the HTTP request:
using (HttpClient client = new HttpClient())
{
Func <HttpRequestMessage> requestCreator = () =>
{
HttpRequestMessage request = new HttpRequestMessage(HttpMethod.Get, requestUrl);
request.Headers.Add("Accept", "application/json;odata=verbose");
return(request);
};
// Send the request using a helper method, which will add an authorization header to the request,
// and automatically retry with a new token if the existing one has expired.
using (HttpResponseMessage response = await Office365Helper.SendRequestAsync(
serviceInfo, client, requestCreator))
{
// Read the response and deserialize the data:
string responseString = await response.Content.ReadAsStringAsync();
if (!response.IsSuccessStatusCode)
{
await Office365Helper.ShowErrorMessageAsync(serviceInfo, responseString);
return(sessionList);
}
//sessionList = JObject.Parse(responseString)["d"]["results"].ToObject<List<Session>>();
JsonValue jsonResponse = JsonValue.Parse(responseString);
JsonObject d = jsonResponse.GetObject().GetNamedObject("d");
JsonArray sessionsArray = d.GetObject().GetNamedArray("results");
if (sessionsArray.Count > 0)
{
foreach (JsonValue o in sessionsArray)
{
Session s = CommonCode.Deserialize <Session>(o.Stringify());
sessionList.Add(s);
}
}
}
}
}
catch (Exception ex)
{
errorMessage = ex.Message;
}
if (!sessionList.Any())
{
await Office365Helper.ShowErrorMessageAsync("No Sessions Available.", errorMessage);
}
return(sessionList);
}
