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BindingOperations Class

Provides static methods to manipulate bindings, including Binding, MultiBinding, and PriorityBinding objects.

System.Object
  System.Windows.Data.BindingOperations

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

'Declaration
Public NotInheritable Class BindingOperations

The BindingOperations type exposes the following members.

  NameDescription
Public methodStatic memberClearAllBindingsRemoves all bindings, including bindings of type Binding, MultiBinding, and PriorityBinding, from the specified DependencyObject.
Public methodStatic memberClearBindingRemoves the binding from a property if there is one.
Public methodStatic memberGetBindingRetrieves the Binding object that is set on the specified property.
Public methodStatic memberGetBindingBaseRetrieves the BindingBase object that is set on the specified property.
Public methodStatic memberGetBindingExpressionReturns the BindingExpression object associated with the specified binding target property on the specified object.
Public methodStatic memberGetBindingExpressionBaseRetrieves the BindingExpressionBase object that is set on the specified property.
Public methodStatic memberGetMultiBindingRetrieves the MultiBinding object that is set on the specified property.
Public methodStatic memberGetMultiBindingExpressionReturns the MultiBindingExpression object associated with the specified binding target property on the specified object.
Public methodStatic memberGetPriorityBindingRetrieves the PriorityBinding object that is set on the specified property.
Public methodStatic memberGetPriorityBindingExpressionReturns the PriorityBindingExpression object associated with the specified binding target property on the specified object.
Public methodStatic memberIsDataBoundReturns a value that indicates whether the specified property is currently data-bound.
Public methodStatic memberSetBindingCreates and associates a new instance of BindingExpressionBase with the specified binding target property.
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This class exposes a set of static methods that serve as helper operations for data bindings.

This example shows how to create and set a Binding in code.

The FrameworkElement class and the FrameworkContentElement class both expose a SetBinding method. If you are binding an element that inherits either of these classes, you can call the SetBinding method directly.

The following example creates a class named, MyData, which contains a property named MyDataProperty.


Public Class MyData
    Implements INotifyPropertyChanged

    ' Events
    Public Event PropertyChanged As PropertyChangedEventHandler _
        Implements INotifyPropertyChanged.PropertyChanged

    ' Methods
    Public Sub New()
    End Sub

    Public Sub New(ByVal dateTime As DateTime)
        Me.MyDataProperty = ("Last bound time was " & dateTime.ToLongTimeString)
    End Sub

    Private Sub OnPropertyChanged(ByVal info As String)
        RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs(info))
    End Sub


    ' Properties
    Public Property MyDataProperty As String
        Get
            Return Me._myDataProperty
        End Get
        Set(ByVal value As String)
            Me._myDataProperty = value
            Me.OnPropertyChanged("MyDataProperty")
        End Set
    End Property


    ' Fields
    Private _myDataProperty As String
End Class


The following example shows how to create a binding object to set the source of the binding. The example uses SetBinding to bind the Text property of myText, which is a TextBlock control, to MyDataProperty.


Dim data1 As New MyData(DateTime.Now)
Dim binding1 As New Binding("MyDataProperty")
binding1.Source = data1
Me.myText.SetBinding(TextBlock.TextProperty, binding1)


For the complete code sample, see Code-only Binding Sample.

Instead of calling SetBinding, you can use the SetBinding static method of the BindingOperations class. The following example, calls BindingOperations.SetBinding instead of FrameworkElement.SetBinding to bind myText to myDataProperty.


Dim myDataObject As New MyData(DateTime.Now)
Dim myBinding As New Binding("MyDataProperty")
myBinding.Source = myDataObject
BindingOperations.SetBinding(myText, TextBlock.TextProperty, myBinding)


More Code

How to: Clear BindingsThis example shows how to clear bindings from an object.

.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.

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
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