System.Data 2.0.0.0 System.Enum The SqlNotificationSource enumeration is referenced by an instance of the class. Query notifications are supported only for SELECT statements that meet a list of specific requirements. The following table provides links to the Service Broker and Query Notifications documentation in SQL Server Books Online. SQL Server Books Online Creating a Query for Notification Security Considerations for Service Broker Security and Protection (Service Broker) Security Considerations for Notifications Services Query Notification Permissions International Considerations for Service Broker Solution Design Considerations (Service Broker) Service Broker Developer InfoCenter Developer's Guide (Service Broker)

Indicates the source of the notification received by the dependency event handler.

Field System.Data.SqlClient.SqlNotificationSource

A client-initiated notification occurred, such as a client-side time-out or as a result of attempting to add a command to a dependency that has already fired.

2.0.0.0 Field System.Data.SqlClient.SqlNotificationSource

Data has changed; for example, an insert, update, delete, or truncate operation occurred.

2.0.0.0 Field System.Data.SqlClient.SqlNotificationSource

The database state changed; for example, the database related to the query was dropped or detached.

2.0.0.0 Field System.Data.SqlClient.SqlNotificationSource

The run-time environment was not compatible with notifications; for example, the isolation level was set to snapshot, or one or more SET options are not compatible.

2.0.0.0 Field System.Data.SqlClient.SqlNotificationSource

A run-time error occurred during execution.

2.0.0.0 Field System.Data.SqlClient.SqlNotificationSource

A database object changed; for example, an underlying object related to the query was dropped or modified.

2.0.0.0 Field 2.0.0.0 System.Data.SqlClient.SqlNotificationSource

Internal only; not intended to be used in your code.

Field System.Data.SqlClient.SqlNotificationSource

The Transact-SQL statement is not valid for notifications; for example, a SELECT statement that could not be notified or a non-SELECT statement was executed.

2.0.0.0 Field System.Data.SqlClient.SqlNotificationSource

A system-related event occurred. For example, there was an internal error, the server was restarted, or resource pressure caused the invalidation.

2.0.0.0 Field System.Data.SqlClient.SqlNotificationSource

The subscription time-out expired.

2.0.0.0 Field 2.0.0.0 System.Data.SqlClient.SqlNotificationSource

Used when the source option sent by the server was not recognized by the client.