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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)

public static class BindingOperations

The BindingOperations type exposes the following members.

  NameDescription
Public propertyStatic memberDisconnectedSourceGets an object that replaces the DataContext when an item container is removed from the visual tree.
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  NameDescription
Public methodStatic memberAccessCollectionProvides access to a collection by using the synchronization mechanism that the application specified when it called EnableCollectionSynchronization.
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 memberDisableCollectionSynchronizationRemove the synchronization registered for the specified collection.
Public methodStatic memberEnableCollectionSynchronization(IEnumerable, Object)Enables a collection to be accessed across multiple threads and specifies the lock object that should be used to synchronize access to the collection.
Public methodStatic memberEnableCollectionSynchronization(IEnumerable, Object, CollectionSynchronizationCallback)Enables a collection to be accessed across multiple threads and specifies the callback that should be used to synchronize access to the collection.
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 memberGetSourceUpdatingBindingGroupsGets all BindingGroup objects that have invalid values or target values have not been updated the source.
Public methodStatic memberGetSourceUpdatingBindingsGets all BindingExpressionBase objects that have invalid values or target values have not been updated the source.
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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  NameDescription
Public eventStatic memberCollectionRegisteringOccurs when the data-binding system notices a collection.
Public eventStatic memberCollectionViewRegisteringOccurs when the data-binding system notices a collection view.
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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 : INotifyPropertyChanged
{
    private string myDataProperty;

    public MyData() { }

    public MyData(DateTime dateTime)
    {
        myDataProperty = "Last bound time was " + dateTime.ToLongTimeString();
    }

    public String MyDataProperty
    {
        get { return myDataProperty; }
        set
        {
            myDataProperty = value;
            OnPropertyChanged("MyDataProperty");
        }
    }

    public event PropertyChangedEventHandler PropertyChanged;

    private void OnPropertyChanged(string info)
    {
        PropertyChangedEventHandler handler = PropertyChanged;
        if (handler != null)
        {
            handler(this, new PropertyChangedEventArgs(info));
        }
    }
}

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.

//make a new source
  MyData myDataObject = new MyData(DateTime.Now);      
  Binding myBinding = new Binding("MyDataProperty");
  myBinding.Source = myDataObject;
  myText.SetBinding(TextBlock.TextProperty, myBinding);

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.

//make a new source
MyData myDataObject = new MyData(DateTime.Now);
Binding myBinding = 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: 4.5, 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

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.

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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