项目
11/18/2011

VisualStateManager.RaiseCurrentStateChanging Method

Microsoft Silverlight will reach end of support after October 2021. Learn more.

Raises the CurrentStateChanging event on the specified VisualStateGroup.

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

Syntax

'Declaration
Protected Sub RaiseCurrentStateChanging ( _
    stateGroup As VisualStateGroup, _
    oldState As VisualState, _
    newState As VisualState, _
    control As Control _
)

protected void RaiseCurrentStateChanging(
    VisualStateGroup stateGroup,
    VisualState oldState,
    VisualState newState,
    Control control
)

Parameters

stateGroup
Type: System.Windows.VisualStateGroup
The object on which the CurrentStateChanging event

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.Controls.Control
The control that is transitioning states.

Exceptions

Exception	Condition
ArgumentNullException	stateGroup is nulla null reference (Nothing in Visual Basic). -or- newState is nulla null reference (Nothing in Visual Basic). -or- control is nulla null reference (Nothing in Visual Basic).

ArgumentNullException

stateGroup is nulla null reference (Nothing in Visual Basic).

-or-

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

-or-

control is nulla null reference (Nothing in Visual Basic).

Version Information

Silverlight

Supported in: 5, 4, 3

Silverlight for Windows Phone

Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0

Platforms

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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