Yes, you can do it in ASP.NET. Not sure why you think you couldn't. HTML is just a text file. Microsoft recently released some extensions to Visual Studio that allow it to support HTML 5. http://visualstudiogallery.msdn.microsoft.com/d771cbc8-d60a-40b0-a1d8-f19fc393127d/

>PMFJI,
>
>When you are saying to go with web-based HTML 5 app, can you use ASP.NET (from VS.NET) and use HTML5 with it? Or do you mean to write "everything" in HTML 5? The reason I am asking is I have an ASP.NET application that works well. But I would like it to be "compatible" with iPad and I guess HTML 5 is the way to go. But I am not sure where to start. Thank you in advance for any suggestions.