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Showing content from https://learn.microsoft.com/en-us/uwp/api/windows.ui.xaml.data.bindingexpression below:

BindingExpression Class (Windows.UI.Xaml.Data) - Windows apps

BindingExpression Class Definition

Important

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Contains information about a single instance of a Binding.

public ref class BindingExpression : BindingExpressionBase

/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
/// [Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
class BindingExpression : BindingExpressionBase

[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
[Windows.Foundation.Metadata.Threading(Windows.Foundation.Metadata.ThreadingModel.Both)]
public class BindingExpression : BindingExpressionBase

Public Class BindingExpression
Inherits BindingExpressionBase

Inheritance

Attributes

Windows requirements Device family

Windows 10 (introduced in 10.0.10240.0)

API contract

Windows.Foundation.UniversalApiContract (introduced in v1.0)

Remarks

The Binding class is the high-level class for the declaration of a binding. The BindingExpression 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 BindingExpression objects. A BindingExpression is an instance expression that cannot be shared and that contains all the instance information about the Binding.

You can obtain a BindingExpression object by calling the GetBindingExpression method on an object, specifying the dependency property that has the binding.

Properties Methods UpdateSource()

Sends the current binding target value to the binding source property in TwoWay bindings.