ObjectDataSource.Selecting Event (System.Web.UI.WebControls)

Selecting Event

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This page is specific to

Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:

.NET Framework Class Library

ObjectDataSource..::.Selecting Event

Updated: November 2007

Occurs before a Select operation.

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

Syntax

Visual Basic (Declaration)

Public Event Selecting As ObjectDataSourceSelectingEventHandler

Visual Basic (Usage)

Dim instance As ObjectDataSource
Dim handler As ObjectDataSourceSelectingEventHandler

AddHandler instance.Selecting, handler

public event ObjectDataSourceSelectingEventHandler Selecting

Visual C++

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

/** @event */
public void add_Selecting (ObjectDataSourceSelectingEventHandler value)
/** @event */
public void remove_Selecting (ObjectDataSourceSelectingEventHandler value)

JScript

JScript does not support events.

ASP.NET

<asp:ObjectDataSource OnSelecting="ObjectDataSourceSelectingEventHandler" />

Remarks

Handle the Selecting event to perform additional initialization that is specific to your application, to validate the values of parameters, or to change the parameter values before the ObjectDataSource control performs the data retrieval operation. The parameters are available as an IDictionary collection that is accessed by the InputParameters property, which is exposed by the ObjectDataSourceMethodEventArgs object.

This event can be fired twice for a single call to the Select method, if the SelectCountMethod property is set. The ExecutingSelectCount property of the ObjectDataSourceSelectingEventArgs object is used to determine if select was called to retrieve data or retrieve the count.

For more information about handling events, see Consuming Events.

Platforms

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

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

Version Information