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SqlDataSourceSelectingEventArgs Class

Note: This class is new in the .NET Framework version 2.0.

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

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.

Event

EventArgs

EventHandler

Selecting.

Occurs before the data is retrieved.

SqlDataSourceSelectingEventArgs

SqlDataSourceSelectingEventHandler

Inserting, Updating, and Deleting.

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

SqlDataSourceCommandEventArgs

SqlDataSourceCommandEventHandler

Selected, Inserted, Updated, and Deleted.

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

SqlDataSourceStatusEventArgs

SqlDataSourceStatusEventHandler

System.Object
   System.EventArgs
     System.ComponentModel.CancelEventArgs
       System.Web.UI.WebControls.SqlDataSourceCommandEventArgs
        System.Web.UI.WebControls.SqlDataSourceSelectingEventArgs
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 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

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

.NET Framework

Supported in: 2.0

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