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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 System.Design.dll)

public event DesignerActionUIStateChangeEventHandler DesignerActionUIStateChange

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 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