ActiveDesignerEventArgs Class

Provides data for the ActiveDesigner event.

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

[PermissionSetAttribute(SecurityAction.LinkDemand, Name = "FullTrust")]
[HostProtectionAttribute(SecurityAction.LinkDemand, SharedState = true)]
[PermissionSetAttribute(SecurityAction.InheritanceDemand, Name = "FullTrust")]
public class ActiveDesignerEventArgs : EventArgs

NoteNote:

The HostProtectionAttribute attribute applied to this type or member has the following Resources property value: SharedState. The HostProtectionAttribute does not affect desktop applications (which are typically started by double-clicking an icon, typing a command, or entering a URL in a browser). For more information, see the HostProtectionAttribute class or SQL Server Programming and Host Protection Attributes.

The ActiveDesigner event occurs when the currently active document changes. The active document changes when a new document is created, an existing document is opened, or a document is closed.

When you create an ActiveDesignerEventArgs delegate, you identify the method that will handle the event. To associate the event with your event handler, add an instance of the delegate to the event. The event handler is called whenever the event occurs, unless you remove the delegate. For more information about event-handler delegates, see Events and Delegates.

The following example method returns an ActiveDesignerEventArgs that contains a specified reference to the IDesignerHost for the designer losing focus and a specified reference to the IDesignerHost for the designer gaining focus.

        public ActiveDesignerEventArgs CreateActiveDesignerEventArgs(IDesignerHost losingFocus, IDesignerHost gainingFocus)
        {
            ActiveDesignerEventArgs e = new ActiveDesignerEventArgs(losingFocus, gainingFocus);
	        return e;
        }

System.Object
  System.EventArgs
    System.ComponentModel.Design.ActiveDesignerEventArgs

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, 1.1, 1.0
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