Windows apps
Collapse the table of content
Expand the table of content
Information
The topic you requested is included in another documentation set. For convenience, it's displayed below. Choose Switch to see the topic in its original location.

DependencyObject.ClearValue Method (DependencyProperty)

Clears the local value of a property. The property to be cleared is specified by a DependencyProperty identifier.

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

'Declaration
Public Sub ClearValue ( _
	dp As DependencyProperty _
)

Parameters

dp
Type: System.Windows.DependencyProperty
The dependency property to be cleared, identified by a DependencyProperty object reference.

ExceptionCondition
InvalidOperationException

Attempted to call ClearValue on a sealed DependencyObject.

Clearing the property value by calling ClearValue does not necessarily give a dependency property the default value that is specified in the dependency property metadata. Clearing the property only specifically clears whatever local value may have been applied. For more information, see Dependency Property Value Precedence.

The following example iterates all properties that have local values set on an object, then calls ClearValue to clear the values of each such property.


Private Sub RestoreDefaultProperties(ByVal sender As Object, ByVal e As RoutedEventArgs)
    Dim uic As UIElementCollection = Sandbox.Children
    For Each uie As Shape In uic
        Dim locallySetProperties As LocalValueEnumerator = uie.GetLocalValueEnumerator()
        While locallySetProperties.MoveNext()
            Dim propertyToClear As DependencyProperty = locallySetProperties.Current.Property
            If Not propertyToClear.ReadOnly Then
                uie.ClearValue(propertyToClear)
            End If
        End While
    Next
End Sub


.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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.

Community Additions

Show:
© 2017 Microsoft