BaseEdit.EditValueChanged Event

Occurs after the editor value was changed.

Namespace: DevExpress.Xpf.Editors

Assembly: DevExpress.Xpf.Core.v24.2.dll

NuGet Package: DevExpress.Wpf.Core

Declaration

C#

public event EditValueChangedEventHandler EditValueChanged

VB.NET

Public Event EditValueChanged As EditValueChangedEventHandler

Event Data

The EditValueChanged event's data class is EditValueChangedEventArgs. The following properties provide information specific to this event:

Property	Description
Handled	Gets or sets a value that indicates the present state of the event handling for a routed event as it travels the route. Inherited from RoutedEventArgs.
NewValue	Gets a new value that has been assigned to the editor.
OldValue	Gets the previous edit value, which has been replaced by the new value.
OriginalSource	Gets the original reporting source as determined by pure hit testing, before any possible Source adjustment by a parent class. Inherited from RoutedEventArgs.
RoutedEvent	Gets or sets the RoutedEvent associated with this RoutedEventArgs instance. Inherited from RoutedEventArgs.
Source	Gets or sets a reference to the object that raised the event. Inherited from RoutedEventArgs.

The event data class exposes the following methods:

Method	Description
InvokeEventHandler(Delegate, Object)	When overridden in a derived class, provides a way to invoke event handlers in a type-specific way, which can increase efficiency over the base implementation. Inherited from RoutedEventArgs.
OnSetSource(Object)	When overridden in a derived class, provides a notification callback entry point whenever the value of the Source property of an instance changes. Inherited from RoutedEventArgs.

Remarks

The editor’s value is specified by the BaseEdit.EditValue property. Before the editor’s value is changed, the editor raises the BaseEdit.Validate event, and allows you to check whether a new value is valid. If the new value is valid, it is accepted and the EditValueChanged event is raised. If the value is invalid, the EditValueChanged event isn’t raised.

To disable the editor’s validation mechanism, set the BaseEdit.CausesValidation property to false. In this instance, the EditValueChanged event is raised each time the edit value changes.

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the EditValueChanged event.

Note

The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.

XAML

wpf-richedit-document-encryption/CS/DXRichEdit_Encryption/MainWindow.xaml#L22

<dxe:PasswordBoxEdit x:Name="passwordEdit"
                     EditValueChanged="passwordChanged"
                     PasswordChar="●"/>

wpf-use-devexpress-theme-in-applications/CS/DevExpress.Examples.ThemeSwitcher/MainWindow.xaml#L22

<dxe:ComboBoxEdit VerticalAlignment="Center" Width="200" ItemsSource="{Binding Source={x:Static dx:Theme.Themes}}" x:Name="cbTheme"
                  DisplayMember="Name" ValueMember="Name" EditValueChanged="cbTheme_EditValueChanged" />

wpf-themes-use-palette-resources-in-custom-controls/CS/DXSample/MainWindow.xaml#L18

</Grid.RowDefinitions>
<dxe:ComboBoxEdit Grid.Row="0" x:Name="comboBoxEdit1" NullText="Select a theme..." IsTextEditable="False" EditValueChanged="comboBoxEdit1_EditValueChanged" SelectedIndex="0">
    <dxe:ComboBoxEdit.ItemsSource>