wpf C# 里面如何通过某个html元素标签找到该标签的父元素标签

mshtml.IHTMLAnchorElement2 html_A = (mshtml.IHTMLAnchorElement2)ele.getElementsByTagName("A");如何找到该标签的父元素

mshtml.IHTMLAnchorElement html_A = (mshtml.IHTMLAnchorElement)ele.getElementsByTagName("A");;如何找到该标签的父元素

用parentNode