/// <summary>
/// Creates an HTML node from a string representing literal HTML.
/// </summary>
/// <param name="html">The HTML text.</param>
/// <returns>The newly created node instance.</returns>
public static HtmlNode CreateNode(string html)
{
// REVIEW: this is *not* optimum...
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(html);
return doc.DocumentNode.FirstChild;
}
/// <summary>
/// 得到安全的Html
/// </summary>
/// <param name="html"></param>
/// <returns></returns>
public static string GetSafeHtml(string html)
{
if (html.IsNullOrEmpty())
return html;
HtmlDocument doc = new HtmlDocument();
doc.LoadHtml(html);
List<HtmlNode> nodesToRemove = new List<HtmlNode>();
IEnumerator e = doc
.CreateNavigator()
.SelectDescendants(System.Xml.XPath.XPathNodeType.All, false)
.GetEnumerator();
while (e.MoveNext())
{
HtmlNode node =
((HtmlNodeNavigator)e.Current)
.CurrentNode;
if (_DefaultNodeBlackList.Contains(node.Name))
nodesToRemove.Add(node);
else
{
FilterAttributes(node);
FilterScriptRelAttributes(node);
}
}
nodesToRemove.ForEach(node => node.ParentNode.RemoveChild(node));
StringBuilder strB = new StringBuilder();
using (StringWriter writer = new StringWriter(strB))
doc.Save(writer);
return strB.ToString();
}
