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Editorial Team
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Asked: 2026-06-07T12:15:40+00:00

<Style TargetType=ComboBoxItem x:Key=ComboBoxItemStyle> <EventSetter Event=Selected Handler=status_SelectionChanged/> </Style> status_SelectionChanged method: public void status_SelectionChanged(object sender, SelectionChangedEventArgs

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<Style TargetType="ComboBoxItem" x:Key="ComboBoxItemStyle">
            <EventSetter Event="Selected" Handler="status_SelectionChanged"/>
</Style>

status_SelectionChanged method:

public void status_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    MessageBox.Show("1");
}

Error: not valid System.Windows.RoutedEventHandler

why?

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1 Answer

  1. Editorial Team

    I believe your method signature for SelectionChanged should use RoutedEventArgs e instead of SelectionChangedEventArgs e

    Here is the MSDN showing the RoutedEventHandler signature

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