ValidationErrorEventArgs Class
Microsoft Silverlight will reach end of support after October 2021. Learn more.
Provides data for the BindingValidationError event.
Inheritance Hierarchy
System.Object
System.EventArgs
System.Windows.RoutedEventArgs
System.Windows.Controls.ValidationErrorEventArgs
Namespace: System.Windows.Controls
Assembly: System.Windows (in System.Windows.dll)
Syntax
'Declaration
Public Class ValidationErrorEventArgs _
Inherits RoutedEventArgs
public class ValidationErrorEventArgs : RoutedEventArgs
The ValidationErrorEventArgs type exposes the following members.
Properties
| Name | Description | |
|---|---|---|
.gif "Public property") .gif "Supported by Silverlight for Windows Phone") |
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 | |
|---|---|---|
.gif "Public method") |
Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
.gif "Protected method") |
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.
Private Sub StackPanel_BindingValidationError(ByVal sender As Object, _
ByVal e As ValidationErrorEventArgs)
If e.Action = ValidationErrorEventAction.Added Then
MyTextBox.Background = New SolidColorBrush(Colors.Red)
ElseIf e.Action = ValidationErrorEventAction.Removed Then
MyTextBox.Background = New SolidColorBrush(Colors.White)
End If
End Sub
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);
}
}
<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>
Version Information
Silverlight
Supported in: 5, 4, 3
Silverlight for Windows Phone
Supported in: Windows Phone OS 7.1, Windows Phone OS 7.0
Platforms
For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.
Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.
See Also