public async Task DeleteAsync(IUserCategory category, TaskContext context)
{
var authentication = context.Authentication;
if (context.AllowException == false)
{
if (await category.Dispatcher.InvokeAsync(() => category.Parent) == null)
{
return;
}
if (await category.Dispatcher.InvokeAsync(() => EnumerableUtility.Descendants <IUserItem, IUser>(category as IUserItem, item => item.Childs).Any()) == true)
{
return;
}
}
await category.DeleteAsync(authentication);
context.Complete(category);
}