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ClientScriptItemCollection Class

Represents a read-only collection of client script blocks that are contained within a Web Form or user control at design time. This class cannot be inherited.

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

public sealed class ClientScriptItemCollection : ReadOnlyCollectionBase

Each ClientScriptItem object in the ClientScriptItemCollection class represents a script block that is contained in a document (a Web Form, Web server control, a content page, or a master page) at design time.

Use the WebFormsRootDesigner class to set or examine client script elements that are contained in a Web Forms document on the design surface. Retrieve the collection of client script elements that are contained within the Web document by using the GetClientScriptsInDocument method. Add a client script element to the Web document by using the AddClientScriptToDocument method.

To add client script elements at run time, use the ClientScriptManager class.


The ClientScriptItemCollection class represents script elements at design time that execute on the client. Because the script elements that are generated for ClientScriptItemCollection objects are not run on the server, the elements do not contain the runat="server" attribute.


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 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, 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.

.NET Framework

Supported in: 3.5, 3.0, 2.0