Image tag not closing with HTMLAgilityPack

Question

Using the HTMLAgilityPack to write out a new image node, it seems to remove the closing tag of an image, e.g. should be but when you check outer html, has .

Answer 1

This seems to be a bug with HtmlAgilityPack. There are many ways to reproduce this, for example:

Debug.WriteLine(HtmlNode.CreateNode("").OuterHtml);

Outputs malformed HTML. Using the suggested fixes in the other answers does nothing.

HtmlDocument doc = new HtmlDocument();
doc.OptionOutputAsXml = true;
HtmlNode node = doc.CreateElement("x");
node.InnerHtml = "";
doc.DocumentNode.AppendChild(node);
Debug.WriteLine(doc.DocumentNode.OuterHtml);

Produces malformed XML / XHTML like

I have created a issue in CodePlex for this.