This documentation is archived and is not being maintained.

SqlCacheDependencyAdmin.EnableTableForNotifications Method (String, String)

Connects to the specified SQL Server database and enables the specified database table for SqlCacheDependency change notifications.

Namespace:  System.Web.Caching
Assembly:  System.Web (in System.Web.dll)

public static void EnableTableForNotifications(
	string connectionString,
	string table


Type: System.String
A connection string used to connect to the SQL Server database.
Type: System.String
The database table on which to enable change notifications.


The database is not enabled for change notifications.


table is null.


A connection to the database could not be established.


The security context of the ASP.NET application does not have permission to connect to the database.


The security context of the ASP.NET application does not have permission to disable notifications for the database.

The EnableTableForNotifications method adds change notifications for the table specified in the table parameter, which must be in the database specified in the connectionString parameter.

Once you have used the EnableTableForNotifications method to add change notifications to a table, you must use one of the DisableTableForNotifications overloads if you wish to disable change notifications.

The following code example uses the EnableTableForNotifications method to enable change notifications on the specified table in the database specified in the connection string MyConnectionString.

For the full code required to run the example, see the Example section of the SqlCacheDependencyAdmin class overview topic.


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.