DesignerActionUIService.DesignerActionUIStateChange Event

Occurs when a request is made to show or hide a smart tag panel.

Namespace: System.ComponentModel.Design
Assembly: System.Design (in

public event DesignerActionUIStateChangeEventHandler DesignerActionUIStateChange
/** @event */
public void add_DesignerActionUIStateChange (DesignerActionUIStateChangeEventHandler value)

/** @event */
public void remove_DesignerActionUIStateChange (DesignerActionUIStateChangeEventHandler value)

In JScript, you can handle the events defined by a class, but you cannot define your own.
Not applicable.

The following table lists the set of specialized classes associated with the DesignerActionUIStateChange event.

Specialized type



Adds information specific to smart tag panel management. This class is specialized from EventArgs.


Connects the DesignerActionUIStateChangeEventArgs with its handler.


Denotes whether the smart tag panel is being displayed or hidden.

For more information about handling events, see Consuming Events.

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

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