How to clean up poorly formed HTML using HTML Agility Pack
See the question and my original answer on StackOverflowOn HtmlNode, the method RemoveChild has this overload:
public HtmlNode RemoveChild(HtmlNode oldChild, bool keepGrandChildren);
So this is how you would do it:
HtmlDocument doc = new HtmlDocument();
doc.Load("yourfile.htm");
foreach (HtmlNode font in doc.DocumentNode.SelectNodes("//font"))
{
font.ParentNode.RemoveChild(font, true);
}
EDIT: It looks like the Replace w/ keepGrandChildren option is not working as expected, so here is an alternate implementation:
public static HtmlNode RemoveChild(HtmlNode parent, HtmlNode oldChild, bool keepGrandChildren)
{
if (oldChild == null)
throw new ArgumentNullException("oldChild");
if (oldChild.HasChildNodes && keepGrandChildren)
{
HtmlNode prev = oldChild.PreviousSibling;
List<HtmlNode> nodes = new List<HtmlNode>(oldChild.ChildNodes.Cast<HtmlNode>());
nodes.Sort(new StreamPositionComparer());
foreach (HtmlNode grandchild in nodes)
{
parent.InsertAfter(grandchild, prev);
}
}
parent.RemoveChild(oldChild);
return oldChild;
}
// this helper class allows to sort nodes using their position in the file.
private class StreamPositionComparer : IComparer<HtmlNode>
{
int IComparer<HtmlNode>.Compare(HtmlNode x, HtmlNode y)
{
return y.StreamPosition.CompareTo(x.StreamPosition);
}
}