沒有有效RoutedEventHandler

Question

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

status_SelectionChanged方法：

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

Error: not valid System.Windows.RoutedEventHandler

爲什麼呢？

Answer 1

我相信你的SelectionChanged方法簽名應該使用RoutedEventArgs e代替SelectionChangedEventArgs e

Here is the MSDN showing the RoutedEventHandler signature

Answer 2

嘗試

private void status_SelectionChanged(object sender, RoutedEventArgs e) 

看到ListBoxItem.Selected