Wpf里，treeview滚动的时候乱动

后台：
private void TreeViewItem_RequestBringIntoView(object sender, RequestBringIntoViewEventArgs e)
{
e.Handled = true;
}

前台：
<TreeView Width="100">
<TreeView.ItemContainerStyle>
<Style TargetType="TreeViewItem">
<EventSetter Event="RequestBringIntoView"
Handler="TreeViewItem_RequestBringIntoView" />
</Style>
</TreeView.ItemContainerStyle>
<TreeViewItem Header="拉克斯基的flak打扫房间啊安安啦啊啊啊">
<TreeViewItem Header="；埃里克森的肌肤啊啊水水水水水水水水水水水水水水水水水水水"></TreeViewItem>
</TreeViewItem>
</TreeView>