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DXEvent

DXEvent is used when you need to define methods that should be called on an event.

Similar to DXBinding and a standard Binding, DXEvent works with the DataContext object by default.

<StackPanel>
    <StackPanel.DataContext>
        <local:ViewModel />
    </StackPanel.DataContext>
    <Button Content="OK" Loaded="{DXEvent Handler='Initialize()'}" />
    <Button Content="OK" Loaded="{DXEvent Handler='Initialize(); Load()'}" />
</StackPanel>
public class ViewModel {
    public void Initialize() { }
    public void Load() { }
}

The Handler expression is specified with a special language that is described in the following topic: Language Specification.

You can pass any parameter to the calling methods.

<TextBlock x:Name="tb" Text="text"/>
<Button Content="OK" Loaded="{DXEvent Handler='Initialize(@e(tb).Text)'}"/>
public void Initialize(string arg) { }

To access the event sender and event arguments, use the @sender and @args reserved words.

<TextBlock x:Name="tb" Text="text"/>
<Button Content="OK" Loaded="{DXEvent Handler='Initialize(@sender.Content, @args, @e(tb).Text)'}"/>
public void Initialize(object content, RoutedEventArgs args, string text) { }

The DXEvent extension supports the “=“ operator.

<Button Click="{DXEvent '@e(checkBox).IsChecked=true'}"/>