Contains information about a single instance of a Binding.
Assembly: PresentationFramework (in PresentationFramework.dll)
Thetype exposes the following members.
|DataItem||Gets the binding source object that this uses.|
|HasError||Gets a value that indicates whether the parent binding has a failed validation rule. (Inherited from BindingExpressionBase.)|
|ParentBinding||Returns the Binding object of the current .|
|ParentBindingBase||Gets the BindingBase object from which this BindingExpressionBase object is created. (Inherited from BindingExpressionBase.)|
|Status||Gets the status of the binding expression. (Inherited from BindingExpressionBase.)|
|ValidationError||Gets the ValidationError that caused this instance of BindingExpressionBase to be invalid. (Inherited from BindingExpressionBase.)|
|Equals(Object)||Determines whether the specified Object is equal to the current Object. (Inherited from Object.)|
|GetHashCode||Serves as a hash function for a particular type. (Inherited from Object.)|
|GetType||Gets the Type of the current instance. (Inherited from Object.)|
|MemberwiseClone||Creates a shallow copy of the current Object. (Inherited from Object.)|
|ToString||Returns a string that represents the current object. (Inherited from Object.)|
|UpdateSource||Sends the current binding target value to the binding source property in TwoWay or OneWayToSource bindings. (Overrides BindingExpressionBase.UpdateSource().)|
|UpdateTarget||Forces a data transfer from the binding source property to the binding target property. (Overrides BindingExpressionBase.UpdateTarget().)|
|ValidateWithoutUpdate||Runs any ValidationRule objects on the associated Binding that have the ValidationStep property set to RawProposedValue or ConvertedProposedValue. This method does not update the source. (Inherited from BindingExpressionBase.)|
The Binding class is the high-level class for the declaration of a binding. The class is the underlying object that maintains the connection between the binding source and the binding target. A Binding contains all the information that can be shared across several objects. A is an instance expression that cannot be shared and that contains all the instance information about the Binding.
For example, consider the following, where myDataObject is an instance of the MyData class, myBinding is the source Binding object, and MyData class is a defined class that contains a string property named MyDataProperty. This example binds the text content of mytext, which is an instance of TextBlock, to MyDataProperty.
You can use the same myBinding object to create other bindings. For example, you might use the myBinding object to bind the text content of a check box to MyDataProperty. In that scenario, there will be two instances of that share the myBinding object.
This example shows how to obtain the binding object from a data-bound target property.
You can do the following to get the Binding object:
You must specify the dependency property for the binding you want because it is possible that more than one property of the target object is using data binding.
Alternatively, you can get the and then get the value of the ParentBinding property.
For the complete example see Binding Validation Sample.
If your binding is a MultiBinding, use BindingOperations.GetMultiBinding. If it is a PriorityBinding, use BindingOperations.GetPriorityBinding. If you are uncertain whether the target property is bound using a Binding, a MultiBinding, or a PriorityBinding, you can use BindingOperations.GetBindingBase.
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