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VisualStateManager.RaiseCurrentStateChanging Method

Raises the CurrentStateChanging event on the specified VisualStateGroup object.

Namespace:  System.Windows
Assembly:  PresentationFramework (in PresentationFramework.dll)

member RaiseCurrentStateChanging : 
        stateGroup:VisualStateGroup * 
        oldState:VisualState * 
        newState:VisualState * 
        control:FrameworkElement * 
        stateGroupsRoot:FrameworkElement -> unit 

Parameters

stateGroup
Type: System.Windows.VisualStateGroup
The object that the CurrentStateChanging event occurred on.
oldState
Type: System.Windows.VisualState
The state that the control is transitioning from.
newState
Type: System.Windows.VisualState
The state that the control is transitioning to.
control
Type: System.Windows.FrameworkElement
The control that is transitioning states.
stateGroupsRoot
Type: System.Windows.FrameworkElement
The root element that contains the VisualStateManager.

ExceptionCondition
ArgumentNullException

stateGroupsRoot is a null reference (Nothing in Visual Basic).

-or-

newState is a null reference (Nothing in Visual Basic).

When the VisualStateGroup is set on the ControlTemplate of a control, the control parameter is set to the control that owns ControlTemplate. When the VisualStateGroup is set on a FrameworkElement, control is a null reference (Nothing in Visual Basic) and you should use the stateGroupsRoot parameter.

Notes to Inheritors

When overriding RaiseCurrentStateChanging in a derived class, be sure to call the base class’s RaiseCurrentStateChanging method so that registered delegates receive the event.

.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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