SqlNotificationSource Enum
Definition
Important
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Indicates the source of the notification received by the dependency event handler.
public enum class SqlNotificationSourcepublic enum SqlNotificationSourcetype SqlNotificationSource = Public Enum SqlNotificationSource- Inheritance
Fields
| Name | Value | Description |
|---|---|---|
| Client | -2 | 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. |
| Unknown | -1 | Used when the source option sent by the server was not recognized by the client. |
| Data | 0 | Data has changed; for example, an insert, update, delete, or truncate operation occurred. |
| Timeout | 1 | The subscription time-out expired. |
| Object | 2 | A database object changed; for example, an underlying object related to the query was dropped or modified. |
| Database | 3 | The database state changed; for example, the database related to the query was dropped or detached. |
| System | 4 | A system-related event occurred. For example, there was an internal error, the server was restarted, or resource pressure caused the invalidation. |
| Statement | 5 | 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. |
| Environment | 6 | 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. |
| Execution | 7 | A run-time error occurred during execution. |
| Owner | 8 | Internal only; not intended to be used in your code. |
Remarks
The SqlNotificationSource enumeration is referenced by an instance of the SqlNotificationEventArgs class.
Query notifications are supported only for SELECT statements that meet a list of specific requirements. For more information, see SQL Server Service Broker and Working with Query Notifications.
