Comments on: How to improve ASP.NET AJAX error handling

By: trickster

trickster — Tue, 05 Apr 2011 00:57:10 +0000

how can I use an event handler to delay access on the PageRequestManager?

By: Karim

Karim — Mon, 20 Sep 2010 11:06:34 +0000

Testing for ‘undefined’ feels wrong here, as args.get_error() returns ‘null’ if there is no error (on my system anyway: ASP.NET 3.5 SP1). What’s wrong with the following test?

...
if (args.get_error() !== null)
...

By: Jeff BBQ

Jeff BBQ — Wed, 09 Jun 2010 19:31:46 +0000

I fought this problem for two days, until I found your post. You Rock!!! Thanks!

By: Barnabas Arul

Barnabas Arul — Wed, 02 Jun 2010 11:28:54 +0000

Hi ,
I have already used the
Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequest);
for different purpose at pagelevel i.e. for loading and closing progress bar.But now i got the new requirement.I need to hide All types of Ajax Errors and make the sesssion out.So if iam using the same above event,getting conflict.Is there any alternative to hide all the ajax errors.Its an urgent issue.Please help me as early as possible

By: Ruurtjan Pul

Ruurtjan Pul — Tue, 27 Apr 2010 12:32:50 +0000

The easy way:

Namespace.webserviceClassName._staticInstance._failed = function( error ) {
    ...
});

where error is an object containing:

var error = {
_exceptionType: string, 
_message: string, 
_stackTrace: string, 
_statusCode: int, 
_timedOut: bool

By: Update panel case study | Private: My Note

Update panel case study | Private: My Note — Sun, 25 Oct 2009 18:14:03 +0000

[...] http://encosia.com/index.php/2007/07/18/how-to-improve-aspnet-ajax-error-handling/ [...]

By: Meltac

Meltac — Fri, 09 Oct 2009 17:37:46 +0000

Thanks again, I will consider that.

By: Dave Ward

Dave Ward — Fri, 09 Oct 2009 16:26:09 +0000

As far as I know, there’s no detriment to setting it as high as you need. If you’re sending more than the default, you may want to consider breaking your data into pages or otherwise partitioning it though. It’s a good sign you may be dealing with too much data at once.

By: Meltac

Meltac — Fri, 09 Oct 2009 10:00:35 +0000

Thanks Dave, that didn’t do the trick, but it leaded me the way to solve another error in our app…

Btw, are there any best practices or recommendations on how large to set the maxJsonLength?

By: Dave Ward

Dave Ward — Fri, 09 Oct 2009 03:10:58 +0000

You may need to adjust maxJsonLength upward. See here for more info: http://msdn.microsoft.com/en-us/library/bb763183.aspx

By: Meltac

Meltac — Thu, 08 Oct 2009 07:08:50 +0000

Under some (my) conditions, when using args.get_error(), the error message is being cut due to some “undocumented” length limitations.

Any ideas how to increase the max message length of the AJAX error?

By: Another John

Another John — Wed, 30 Sep 2009 19:20:13 +0000

This is nice code and was fairly easy to adapt for use to masterpages, ajax, and Telerik controls. I used Telerik’s RadWindow alert box as the modal dialog – worked really slick. This good example saved me a few steps today.

John

By: Dave Ward

Dave Ward — Sat, 12 Sep 2009 21:43:01 +0000

That’s probably due to the rendered ClientIDs being changed in the Master/Content scenario. In my specific example, it shouldn’t matter since the div isn’t runat=”server”, but your situation may be impacted.

Try replacing any $get(‘ID’) with $get(‘< %= ID.ClientID %>‘) to make sure your JavaScript is referencing the correct element.

By: Mattias

Mattias — Fri, 11 Sep 2009 08:36:13 +0000

Im trying to get this to work with a masterpage.
I have a updatepanel on a content page and if I remove the updatepanel it works.

How do I solve this ?

By: Hani

Hani — Tue, 01 Sep 2009 15:54:20 +0000

Hello,

Kindly note that i am using the APPLICATION ERRO function to catch all unhandled errors. what is happening is that AJAX errors are now handled by the Application_Error.

Please advise how to handle AJAX errors alone.

Sub Application_Error(ByVal sender As Object, ByVal e As EventArgs)
Dim vLastError As New Exception
vLastError = Server.GetLastError().GetBaseException()

If vLastError Is Nothing Then
Application(“GLOBAL_ErrorMessage”) = “No Errors”
Else
Application(“GLOBAL_ErrorMessage”) = vLastError.Message
End If

Server.ClearError()
Response.Redirect(“~/errors.aspx”)
‘Server.Transfer(“~/errors.aspx”)
End Sub