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SqlDataSourceSelectingEventArgs Class

Provides data for the Selecting event of the SqlDataSource control.

Namespace: System.Web.UI.WebControls
Assembly: System.Web (in system.web.dll)

public class SqlDataSourceSelectingEventArgs : SqlDataSourceCommandEventArgs
public class SqlDataSourceSelectingEventArgs extends SqlDataSourceCommandEventArgs
public class SqlDataSourceSelectingEventArgs extends SqlDataSourceCommandEventArgs
Not applicable.

By adding an event handler delegate to handle the Selecting event, you can perform any additional preprocessing required or cancel the database query entirely. Because the SqlDataSourceSelectingEventArgs class is derived from the SqlDataSourceCommandEventArgs class, you can cancel a pending SqlDataSource database query by setting the Cancel property to true. You can examine and manipulate the CommandText, Parameters collection, and other database query properties prior to running the query by accessing the DbCommand object exposed by the Command property. You can also examine the DataSourceSelectArguments object that is passed to the Select method by accessing the Arguments property.

The SqlDataSourceSelectingEventArgs class is used in the OnSelecting method to provide access to a SqlDataSource database query before it is run.

The SqlDataSource control exposes many events that you can handle to work with the underlying data objects during the course of a data operation. The following table lists the events and associated EventArgs classes and event handler delegates.





Occurs before the data is retrieved.



Inserting, Updating, and Deleting.

Occur before an insert, update, or delete operation is performed.



Selected, Inserted, Updated, and Deleted.

Occur after the data retrieval, insert, update, or delete operation completes.




Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

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