Category Archives: FireFox

Sys.WebForms.PageRequestManagerServerErrorException in FireFox with MSFT Ajax

If you encounter this error while navigating away from an AJAX-enabled page with a non-IE browser, you can silence it with the following JavaScript:   if (!document.all) //non-ie { window.onbeforeunload = function() { Sys.WebForms.PageRequestManager.getInstance().add_endRequest(ignoreOnEndRequest); } }   function ignoreOnEndRequest(sender, e) … Continue reading

Posted in ASP.Net, C#, FireFox, JavaScript | 1 Comment

Fix FireFox SLOWdown on Vista while Debugging localhost

If you use FireFox to debug on Windows Vista, you most likely have noticed how ridiculously slow it is rendering localhost requests versus Internet Explorer.  No, this isn’t a conspiracy, just an issue with IPv6, FireFox, and Windows Vista. To … Continue reading

Posted in FireFox, Visual Studio | Leave a comment

FireFox caches JavaScript state

Firefox uses in memory caching for JavaScript and can cause strange errors in your MSFT ASP.NET Ajax applications. Try adding this to your load event to prevent those errors:   if (Request.Browser.MSDomVersion.Major == 0) // Non IE Browser?) { Response.Cache.SetNoStore(); … Continue reading

Posted in C#, FireFox, JavaScript | Leave a comment