Now I am confused. I was under the impression that xbaps will run in Firefox with the IE tab installed and .net framework 3.5. In fact, I have some old code from a discussion online to detect the presence of WPF inside the browser that I meant to test, but haven't gotten to:

  if (navigator.plugins["Windows Presentation Foundation"])
        {
             // redirect to your .xbap
        }
        else
        {
            // redirect to .NET 3.5 download page

        }

I haven't researched it since, so is that not the case?

And there is also this:
http://msdn.microsoft.com/en-us/library/bb909867.aspx


>Hi Craig.
>That wont really be a solution then for a Web App as you cant ensure that everybody on the web is going to be using IE ?
>
>regards,
>Gerard
>
>
>
>
>>Yes, you can develop one app. But..keep in mind that WPF in the browser only works in IE.
>>
>>
>>>Hi Craig. Thanks for replying.
>>>
>>>Does that mean that, if I want to develop an APP, and want to run it on both Desktop, and Web, I can use WPF to
>>>develop once and deply to both Desktop and Web
>>>(Currenlty , I would have to debelop Two apps, one in Winforms and one in ASP.Net)
>>>
>>>Regards,
>>>Gerard