如何在XAML中使用选定的值制作简单的组合框？

   <ComboBoxItem Content="选项1"/>
   <ComboBoxItem Content="选项2"/>
   <ComboBoxItem Content="选项3"/>
</ComboBox>

   <ComboBoxItem Content="选项1"/>
   <ComboBoxItem Content="选项2"/>
   <ComboBoxItem Content="选项3"/>
</ComboBox>

private void MyComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
    ComboBoxItem selectedItem = (ComboBoxItem)MyComboBox.SelectedItem;
    string selectedValue = selectedItem.Content.ToString();
    // 在这里处理选定的值
}