async public Task GetChallengeHistory(bool forceRefresh = false)
{
if (!forceRefresh && _hasLoadedBefore)
{
return;
}
using (new Busy(this))
{
ChallengeViewModel empty = null;
if (Challenges.Count == 0)
{
empty = new ChallengeViewModel()
{
EmptyMessage = "Loading previous challenges"
};
Challenges.Add(empty);
}
var task = AzureService.Instance.GetChallengesForMembership(Membership);
await RunSafe(task);
if (task.IsFaulted)
{
return;
}
if (empty != null && Challenges.Contains(empty))
{
Challenges.Remove(empty);
}
LocalRefresh(task.Result);
}
}