Is There A Way To Be Notified In .net When Data Changes In The Sql Server? Like An Event?

Is there a way to bind an event to Sql Server (specially Azure) so that, when there's new data in a table, for instance, my .NET process will be notified? Another option that I tou

Solution 1:

Not in Azure. In box product you have Query Notifications and its derivatives (SqlNotificationRequest, SqlDependency and SqlCacheDependency), see The Mysterious Notification for details. You can use it as a LINQ wrapper with LinqToCache.

But Query Notifications are not supported on Azure. On Azure your application should notify whenever it updates the database, using Azure Queues.

Solution 2:

You can use SqlTableDependency

SqlTableDependency is a generic C# component used to receive notifications when the content of a specified database table change.

What is the difference with .NET SqlDepenency ?

Basically, the main difference is that SqlTableDependency send events containing values for the record inserted, changed or deleted, as well as the DML operation (insert/delete/update) executed on the table: SqlDepenency doesn't tell what data was changed on the database table, they only say that something has changed.