Page.SetFocus Method (String)

 
System_CAPS_noteNote

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Sets the browser focus to the control with the specified identifier.

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

member SetFocus : 
        clientID:string -> unit

Parameters

clientID
Type: System.String

The ID of the control to set focus to.

Exception Condition
ArgumentNullException

clientID is null.

InvalidOperationException

SetFocus is called when the control is not part of a Web Forms page.

- or -

SetFocus is called after the PreRender event.

Use the SetFocus method to make the control with the specified ID string the active control in the Web page displayed by the browser. The SetFocus method must be called before the page is prepared for rendering to the client in the PreRender event.

System_CAPS_noteNote

The SetFocus method will work only on browsers supporting ECMAScript version 1.3 or later.

The following code example sets the focus to the second text box on a Web page.

System_CAPS_security Security Note

This example has a text box that accepts user input, which is a potential security threat. By default, ASP.NET Web pages validate that user input does not include script or HTML elements. For more information, see Script Exploits Overview.

No code example is currently available or this language may not be supported.

.NET Framework
Available since 2.0
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