public static async Task <ListSubscription> CreateListSubscriptionAsync(ListSubscription subscription)
{
// Check if there is an existing record and don't
// let the create happen if there is.
var existingSubscriptions = await GetListSubscriptionsAsync(s => s.Resource.CompareTo(subscription.Resource) == 0);
if (existingSubscriptions.Count() > 0)
{
throw new InvalidOperationException("A subscription record already exists.");
}
return(await CreateItemAsync(subscription, subscriptionCollection));
}
public static async Task <ListSubscription> UpdateListSubscriptionAsync(string id, ListSubscription subscription)
{
return(await UpdateItemAsync(id, subscription, subscriptionCollection));
}
