I am integrating SqlCacheDependency to use in my LinqToSQL datacontext.
I am using an extension class for Linq querys found here - http://code.msdn.microsoft.com/linqtos
ok here is how to do this if yours is disabled or you need to restore a backup, which seems to disable it.
just run this script, it will kill all the process's that a database is using (why you carnt in 2008 manually kill process's unlike 2005 is beyond me) and then set the broker
USE master
go
DECLARE @dbname sysname
SET @dbname = 'YourDBName'
DECLARE @spid int
SELECT @spid = min(spid) from master.dbo.sysprocesses where dbid = db_id(@dbname)
WHILE @spid IS NOT NULL
BEGIN
EXECUTE ('KILL ' + @spid)
SELECT @spid = min(spid) from master.dbo.sysprocesses where dbid = db_id(@dbname) AND spid > @spid
END
ALTER DATABASE @dbname SET ENABLE_BROKER