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ValidationErrorEventArgs Class

Silverlight

Provides data for the BindingValidationError event.

System.Object
  System.EventArgs
    System.Windows.RoutedEventArgs
      System.Windows.Controls.ValidationErrorEventArgs

Namespace: System.Windows.Controls
Assembly: System.Windows (in System.Windows.dll)

Syntax

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public class ValidationErrorEventArgs : RoutedEventArgs

The ValidationErrorEventArgs type exposes the following members.

Properties

	Name	Description
	Action	Gets the state of the validation error.
	Error	Gets the validation error that caused the BindingValidationError event.
	Handled	Gets or sets the value that marks the routed event as handled.
	OriginalSource	Gets a reference to the object that raised the event. (Inherited from RoutedEventArgs.)

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Methods

	Name	Description
	Equals(Object)	Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
	Finalize	Allows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (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.)

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Remarks

The BindingValidationError event is raised when the binding engine creates and removes a validation error.

Examples

The following example shows how to set a binding to catch validation errors. When a BindingValidationError event is reported, use the ValidationErrorEventArgs to present the error Action information graphically to the user.

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private void StackPanel_BindingValidationError(object sender, 
    ValidationErrorEventArgs e)
{
    if (e.Action == ValidationErrorEventAction.Added)
    {
        MyTextBox.Background = new SolidColorBrush(Colors.Red);

    }
    else if (e.Action == ValidationErrorEventAction.Removed)
    {
        MyTextBox.Background = new SolidColorBrush(Colors.White);
    }
}

XAML

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<StackPanel BindingValidationError="StackPanel_BindingValidationError" >
    <StackPanel.Resources>
        <my:Bills x:Name="MyBills"/>
    </StackPanel.Resources>
    <TextBox x:Name="MyTextBox" Width="50" Margin="10">
        <TextBox.Text>
            <Binding Mode="TwoWay" Source="{StaticResource MyBills}" 
                     Path="Amount" NotifyOnValidationError="true" 
                     ValidatesOnExceptions="true"/>
        </TextBox.Text>
    </TextBox>
    <Button Height="50" Width="150" Content="Click To Update Source"/>
</StackPanel>