private void OnContactListException(object sender, GetContactListExceptionEventArgs e) { Dispatcher.BeginInvoke(() => { if(SystemTray.ProgressIndicator != null) SystemTray.ProgressIndicator.IsVisible = false; if (Cinderella.CinderellaCore.ContactList.Count == 0) { StatusLabel.Text = AppResources.ContactsLoadingErrorText; StatusLabel.Visibility = Visibility.Visible; } }); }
public async void GetContactListAsync(int page, int perPage, Dictionary<string, string> parameters = null) { if (isLoadingContactList) return; isLoadingContactList = true; string timestamp = DateTimeUtils.GetTimestamp(); string nonce = Guid.NewGuid().ToString().Replace("-", null); Dictionary<string, string> paramDict = new Dictionary<string, string>(); paramDict["method"] = "flickr.contacts.getList"; paramDict["format"] = "json"; paramDict["nojsoncallback"] = "1"; paramDict["oauth_consumer_key"] = consumerKey; paramDict["oauth_nonce"] = nonce; paramDict["oauth_signature_method"] = "HMAC-SHA1"; paramDict["oauth_timestamp"] = timestamp; paramDict["oauth_token"] = AccessToken; paramDict["oauth_version"] = "1.0"; paramDict["page"] = page.ToString(); paramDict["per_page"] = perPage.ToString(); if (parameters != null) { foreach (var entry in parameters) { paramDict[entry.Key] = entry.Value; } } string paramString = GenerateParamString(paramDict); string signature = GenerateSignature("GET", AccessTokenSecret, "https://api.flickr.com/services/rest", paramString); string requestUrl = "https://api.flickr.com/services/rest?" + paramString + "&oauth_signature=" + signature; HttpWebResponse response = await DispatchRequest("GET", requestUrl, null).ConfigureAwait(false); using (StreamReader reader = new StreamReader(response.GetResponseStream())) { isLoadingContactList = false; if (response.StatusCode != HttpStatusCode.OK) { var exceptionEvt = new GetContactListExceptionEventArgs(); exceptionEvt.Page = page; exceptionEvt.PerPage = perPage; GetContactListException.DispatchEvent(this, exceptionEvt); HandleHTTPException(response); return; } string jsonString = await reader.ReadToEndAsync().ConfigureAwait(false); if (!TryHandleResponseException(jsonString, () => { GetContactListAsync(page, perPage, parameters); }, () => { var exceptionEvt = new GetContactListExceptionEventArgs(); exceptionEvt.Page = page; exceptionEvt.PerPage = perPage; GetContactListException.DispatchEvent(this, exceptionEvt); })) return; GetContactListEventArgs args = new GetContactListEventArgs(); args.Page = page; args.PerPage = perPage; args.Response = jsonString; ContactListReturned.DispatchEvent(this, args); } }