Surround Existing Node With Another Node With Agility Pack

How would you go about surrounding all tables with a

node? This apparently does not do it: if (oldElement.Name == 'table') { HtmlDocume

Solution 1:

It might be a little bit ugly, but you could just edit the InnerHtml attribute of the oldElement.ParentNode node like so:

if (oldElement.Name=="table")
{
    oldElement.ParentNode.InnerHtml="\r\n<div class=\"overflow\">\r\n"+ oldElement.OuterHtml+"\r\n</div>\r\n";
}

It also doesn't seem like you could edit the OuterHtml attribute of oldElement (which is why you have to get the ParentNode first). The HtmlAgilityPack says you can get/set OuterHtml, but VS2010 was telling me it's a read-only property.

Edit

I was playing around with some code to figure this out and saw that oldElement.ParentNode becomes the <div> node after AppendChild() is called. The solution I found is to make another HtmlNode at the start of the if block to hold the parent, and then calling ReplaceChild() on that node at the end:

if (oldElement.Name == "table")
{
    HtmlNodetheParent= oldElement.ParentNode;

    HtmlDocumentdoc=newHtmlDocument();
    HtmlNodenewElement= doc.CreateElement("div");
    newElement.SetAttributeValue("class", "overflow");
    newElement.AppendChild(oldElement);

    theParent.ReplaceChild(newElement, oldElement);
}

Solution 2:

Take a look at CsQuery, a C# port of jQuery. This can easily be accomplished. First load the document:

CQdoc= CQ.CreateFromFile(..)  // orCQdoc= CQ.CreateFromUrl(..)   // orCQdoc= CQ.Create(string)

Create the structure to wrap with, here are four different ways you could do that.

var wrap = CQ.CreateFragment("<div class='overflow'></div>");   // or// you can pass HTML as a selector as in jQuery. The property indexer for a CQ// object is the default method, same as $(..)var wrap = doc["<div class='overflow'></div>"];   // orvar wrap = doc["<div />"].AddClass("overflow");  // or// creates an element directly, sames as browser DOM methodsvar wrap = doc.Document.CreateElement("div");
wrap.ClassName="overflow";

Wrap all tables with the structure:

doc["table"].Wrap(wrap);          // or use longhand for the Select method

doc.Select("table").Wrap(wrap);   

Render the complete document to a string:

string html = doc.Render();