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SqlDataSource::Selecting Event

.NET Framework 4.5

Occurs before a data retrieval operation.

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

public:
 event SqlDataSourceSelectingEventHandler^ Selecting {
	void add (SqlDataSourceSelectingEventHandler^ value);
	void remove (SqlDataSourceSelectingEventHandler^ value);
}

ASP.NET

<asp:SqlDataSource OnSelecting="SqlDataSourceSelectingEventHandler" />

Remarks

Handle the Selecting event to perform additional initialization operations that are specific to your application, to validate the values of parameters, or to change the parameter values before the SqlDataSource control performs the select operation. The select arguments are available from the SqlDataSourceSelectingEventArgs object that is associated with the event.

For more information about handling events, see Consuming Events.

Version Information

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0

Platforms

Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

Reference

SqlDataSource Class

System.Web.UI.WebControls Namespace

Other Resources

ASP.NET Data Access Options

Data Source Web Server Controls

SqlDataSource Web Server Control Overview

ASP.NET Page Life Cycle Overview

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