ComponentTray Class

Provides behavior for the component tray of a designer.

Namespace: System.Windows.Forms.Design
Assembly: System.Design (in

public class ComponentTray : ScrollableControl, IExtenderProvider
public class ComponentTray extends ScrollableControl implements IExtenderProvider
public class ComponentTray extends ScrollableControl implements IExtenderProvider
Not applicable.

The component tray represents components that do not otherwise provide a visible surface at design time and provides a way for users to access and set the properties of those components.

Some types of components, such as a Timer, may not have a user interface that can be viewed at design time. These components are usually represented by icons that are shown in the component tray.

The component tray is a rectangular region displayed at the bottom of the design view window while in design view mode, once it is active. The component tray becomes active in design view after a component that is displayed in the component tray has been added to or is part of the current document.


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

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0