Enables notification to a host application that a modal dialog is displayed.
Assembly: System.Activities.Presentation (in System.Activities.Presentation.dll)
Thetype exposes the following members.
Some applications that host designers need to be notified when a modal dialog box has been invoked. Visual Studio is an example of such a host. The interface provides an interface to communicate the current modal status.
The Windows Workflow Designer calls the SetModalState method. When the isModal parameter is set to true, the host is notified that a modal dialog is displayed.
This is an optional service. If a host application does not care about the modal status, you need not use the service.
In the current implementation, if a Windows Presentation Foundation (WPF) message box (which is a modal dialog) is invoked, the SetModalStateis not called. If the host application requires this information, another workaround must be created.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.