Visual Studio's Format Document – How to Write it in C#

I'm having a go at writing some C# code which overrides the Render method of the System.Web.UI.Page and then reformats the HTML before presenting it to the browser. This is purely experimental so overhead is not a concern right now.

I'm perhaps a little learned in the ways of the regular expression and would like to utilise them here, but I can't seem to think of a real concise and elegant way of nicely formatting a HTML document. I've managed to completely minify the HTML using regex, but as for correctly indenting it, I'm stumped.

So, if开发者_JAVA百科 you had a string of HTML, using C#, how would you reformat it in much the same way as Visual Studio's Format Document function does? Any ideas would be greatly appreciated.

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Use Tidy. I have used this .net wrapper quite successfully.