復制代碼 代碼如下:

XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml("<xml>" + s + "</xml>");
xmlDoc.SelectSingleNode(@"http://b4").InnerText = "修改后的b4";
Response.Write(Server.HtmlEncode(xmlDoc.DocumentElement.InnerXml));

復制代碼 代碼如下:

string s = @"<a1>a1的值</a1><a2>a2的值</a2><a3>a3的值</a3><a4><b4>b4的值</b4></a4>";
HtmlDocument hxmlDoc = new HtmlDocument();
hxmlDoc.LoadHtml(s);
hxmlDoc.DocumentNode.SelectSingleNode(@"http://b4").InnerHtml = "修改后的b4";
Response.Write(Server.HtmlEncode(hxmlDoc.DocumentNode.InnerHtml));