WPF ComboBox SelectionChanged 重复执行的问题

参考：WPF TabControl SelectionChanged 重复执行的问题 - 一！雨 - 博客园 (cnblogs.com)

添加如下代码

private void ComboBox_SelectionChanged(object sender, SelectionChangedEventArgs e) 
        { 
            e.Handled = true; 
        } 

如果采用MVVM模式，在当前页面中添加如下代码（注意不是ViewModel中）

 <TabControl SelectionChanged="TabControl_OnSelectionChanged">
            <i:Interaction.Triggers>
                <i:EventTrigger EventName="SelectionChanged">
                    <command:EventToCommand Command="{Binding TabSelectTestCommand}"   />
                </i:EventTrigger>
            </i:Interaction.Triggers>
            <TabItem Header="dd"></TabItem>
 </TabControl>

 private void TabControl_OnSelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            if (e.Source.GetType() != typeof (TabControl))
            {
                e.Handled = true;
            }
        }