Binding.NotifyOnValidationError Property (System.Windows.Data)

NotifyOnValidationError Property

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This page is specific to

Microsoft Visual Studio 2008/.NET Framework 3.5

Other versions are also available for the following:

.NET Framework Class Library

Binding..::.NotifyOnValidationError Property

Gets or sets a value that indicates whether to raise the Error attached event on the bound object.

Namespace: System.Windows.Data
Assembly: PresentationFramework (in PresentationFramework.dll)
XMLNS for XAML: http://schemas.microsoft.com/winfx/2006/xaml/presentation, http://schemas.microsoft.com/netfx/2007/xaml/presentation

Syntax

Visual Basic (Declaration)

Public Property NotifyOnValidationError As Boolean

Visual Basic (Usage)

Dim instance As Binding
Dim value As Boolean

value = instance.NotifyOnValidationError

instance.NotifyOnValidationError = value

public bool NotifyOnValidationError { get; set; }

Visual C++

public:
property bool NotifyOnValidationError {
    bool get ();
    void set (bool value);
}

JScript

public function get NotifyOnValidationError () : boolean
public function set NotifyOnValidationError (value : boolean)

XAML Attribute Usage

<object NotifyOnValidationError="bool" .../>

Property Value

Type: System..::.Boolean
true if the Error attached event should be raised on the bound object when there is a validation error during source updates; otherwise, false. The default is false.

Remarks

If the binding has ValidationRules associated with it, the binding engine checks each rule each time it transfers the target property value to the source property. If a rule invalidates a value, the binding engine creates a ValidationError object and adds it to the Validation.Errors collection of the bound object. When the Validation..::.Errors property is not empty, the Validation..::.HasError attached property of the object is set to true. If the NotifyOnValidationError property of the Binding is set to true, then the binding engine raises the Validation..::.Error attached event on the object.

For a detailed discussion of the validation process, see the Data Validation section in the Data Binding Overview.

Platforms

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Version Information

.NET Framework

Supported in: 3.5, 3.0

Reference

Binding Class

Binding Members

System.Windows.Data Namespace

Other Resources

Data Binding Overview