protected override async void OnNavigatedFrom(NavigationEventArgs e)
{
if (string.IsNullOrEmpty(this.ActionItem.Raw))
{
ActionItemManager.Delete(this.ActionItem);
}
else
{
// Try and save first...
await ActionItemManager.SaveAsync();
}
// As you were
base.OnNavigatedFrom(e);
SystemNavigationManager.GetForCurrentView().BackRequested -= EditPage_BackRequested;
}
private async Task DeleteAsync()
{
IList <ActionItem> toBeDeleted = new List <ActionItem>();
// We have to make a temporary list of things to delete as doing so in the loop
// will invalidate the IEnumerable
foreach (ActionItem actionItem in this.ActionItems.SelectedItems)
{
toBeDeleted.Add(actionItem);
}
foreach (var actionItem in toBeDeleted)
{
ActionItemManager.Delete(actionItem);
}
await ActionItemManager.SaveAsync();
}