ASP.net not generating javascript for some User Agents

Answer 1

Are you sure you have ASP.NET installed on your web server?

Answer 2

It looks like the __doPostBack() function is not being generated because you have no server-side events which require it.

ASP.NET likes to only generate the __doPostBack() function when you have event listeners subscribed that would need it to function correctly.

Answer 3

You have AutoEventWireup set to false, but no Override of OnInit to attach the event. Try changing the AutoEventWireup to true.

Edit: From the more information it could be that it is incorrectly identifying Firefox in the brower capabilities section of your machine.config. (or web.config).

It could also be that JavaScript is turned off in Firefox, and thus .NET is determining that there is no point rendering the Javascript stuff, and should use a different approach to postback handling, if there is such a thing.

Answer 4

Based on the new information, I think it's clear that this is a Firefox problem (perhaps you have an add-on blocking JS), and not a programming question. I get fine results with your code using VS 2008 and FF3 on XP Pro, as I'd expect will most anyone else trying it.

You may try reinstalling Firefox, ensure that JS works on all other sites, make sure localhost doesn't have different security permissions...

Answer 5

Before you reinstall Firefox, run it in debug mode (I think it's called debug mode). It turns off all plugins and that can help you narrow it down a bit. What about other browsers like Chrome or Safari?

Answer 6

The problem is the default way ASP.net treats unknown browsers... such as the iPhone. Even though it would be nice to assume unknown browsers could use javascript... you can specify what capabilities that a browser has in the section of web.config or machine.config.

Check out http://slingfive.com/pages/code/browserCaps/ for an updated browsercaps config file for asp.net

Here is an example of a case to match GECKO Based Browsers (Netscape 6+, Mozilla/Firefox, ...)

<case match="^Mozilla/5\.0 \([^)]*\) (Gecko/[-\d]+)(?'VendorProductToken' (?'type'[^/\d]*)([\d]*)/(?'version'(?'major'\d+)(?'minor'\.\d+)(?'letters'\w*)))?">
       browser=Gecko
       <filter>
        <case match="(Gecko/[-\d]+)(?'VendorProductToken' (?'type'[^/\d]*)([\d]*)/(?'version'(?'major'\d+)(?'minor'\.\d+)(?'letters'\w*)))">
         type=${type}
        </case>
        <case> <!-- plain Mozilla if no VendorProductToken found -->
         type=Mozilla
        </case>
       </filter>
       frames=true
       tables=true
       cookies=true
       javascript=true
       javaapplets=true
       ecmascriptversion=1.5
       w3cdomversion=1.0
       css1=true
       css2=true
       xml=true
       tagwriter=System.Web.UI.HtmlTextWriter
       <case match="rv:(?'version'(?'major'\d+)(?'minor'\.\d+)(?'letters'\w*))">
        version=${version}
        majorversion=0${major}
        minorversion=0${minor}
        <case match="^b" with="${letters}">
         beta=true
        </case>
       </case>
      </case>