private void SearchSuggestedContacts() { if (mSearchTokenSource != null) { mSearchTokenSource.Cancel(); mSearchTokenSource = null; } mSearchTokenSource = new CancellationTokenSource(); var token = mSearchTokenSource.Token; Task.Run(async() => { await Task.Delay(500, token); mPlatformService.ShowNetworkIndicator(); var result = await mApiService.GetContactList(EmailInvite); mPlatformService.HideNetworkIndicator(); if (result.StatusCode == System.Net.HttpStatusCode.OK && result.Data != null) { var realList = result.Data.Where(p => !Invites.Any(ct => ct.Invite.InviteeEmail == p.InviteeEmail)); if (realList.Count() > 0) { ShowSuggestedContacts = true; SuggestedContacts = new MvxObservableCollection <Invite>(realList); } else { ShowSuggestedContacts = false; } } else { ShowSuggestedContacts = false; } }, token);; }