Events

You can attach event handlers for the following events:

The "before" events can be cancelled by setting the Cancel property of the event arguments to true.

Events are attached to the DataSet's Events property:

var dbCustomers = dbContext.DataSet<Customer>();

dbCustomers.Events.ObjectCreating += (sender,args) => {
   Console.WriteLine("Creating customer {0}", args.Value.Name);

   args.Cancel = true; // if you want to cancel the insert operation
}

The event arguments always have a property Value which points to the object being inserted/updated/deleted. For "before" events, there's also a boolean Cancel property which can be set to true if the operation should not be executed.