ASP.NET AJAX UI

Re: How to resolve "Sys.WebForms.PageRequestManagerParserErrorException" issue

fabiotib — Wed, 25 Nov 2009 01:35:32 GMT

Hi,
The error occurs because the control that executed the Server.Transfer () method is declared within one or more UpdatePanel as AsyncPostBackTrigger. So, removing this condition the problem stops occurring.

Re: How to resolve "Sys.WebForms.PageRequestManagerParserErrorException" issue

sandeep.cec — Fri, 30 Oct 2009 07:48:06 GMT

I am firing master page button click event using jquery .Button is In Update Panel .Locally my code is running properly But at live server It returns 500 status code error.Complete error is given below.

<asp:UpdatePanel ID="UpPhoto" runat="server" UpdateMode="Conditional" >

<ContentTemplate> my button is here

</ContentTemplate> </asp:UpdatePanel>

i have used follows methods to solve issue but of no use

1. validateRequest=false, EnableEventValidation="false",

full error message:

[Exception... "'Sys.WebForms.PageRequestManagerServerErrorException: Sys.WebForms.PageRequestManagerServerErrorException: An unknown error occurred while processing the request on the server. The status code returned from the server was: 500' when calling method: [nsIDOMEventListener::handleEvent]" nsresult: "0x8057001c (NS_ERROR_XPC_JS_THREW_JS_OBJECT)" location: "JS frame :: chrome://firebug/content/spy.js :: onHTTPSpyReadyStateChange :: line 497" data: no]

SOLVED!! "Sys.WebForms.PageRequestManagerParserErrorException" issue

Terry_n_Harris — Mon, 27 Jul 2009 02:47:35 GMT

I HAVE SOLVED IT!!!

I had this issue for a while i couldnt download anything from my webap as i kept getting this error, then i came across this brillian tpiece of code and everything works fine

<code>

private void exportDataTableToCsv(DataTable formattedDataTable, string filename)
{
   DataTable toExcel = formattedDataTable.Copy();
   HttpContext context = HttpContext.Current;
   context.Response.Clear();

   foreach (DataColumn column in toExcel.Columns)
   {
      context.Response.Write(column.ColumnName + ",");
   }

   context.Response.Write(Environment.NewLine);
   foreach (DataRow row in toExcel.Rows)
   {
      for (int i = 0; i < toExcel.Columns.Count; i++)
      {
         context.Response.Write(row[i].ToString().Replace(",", string.Empty) + ",");
      }

      context.Response.Write(Environment.NewLine);
   }

   context.Response.ContentType = "text/csv";
   context.Response.AppendHeader("Content-Disposition", "attachment; filename=" + filename + ".csv");
   context.Response.End();
}

<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:LinkButton ID="lbToExcel" runat="server" OnClick="exportDataTableToCsv">Export To Excel</asp:LinkButton>
</ContentTemplate>
<Triggers>
<asp:PostBackTrigger ControlID="lbToExcel">
</asp:PostBackTrigger>
</Triggers>
</asp:UpdatePanel>

</code>

Bacically i need to put my button in an update panel and add a postback trigger for that button, now everything works fine and no errrs
ALAS! i cant claim that i figured this out myself :( but here is the link that i used http://www.victorchen.info/export-datatable-to-csv-file-download-in-c/

(i also havent figued out how to use the insert code feature correctly)

Re: How to resolve "Sys.WebForms.PageRequestManagerParserErrorException" issue

srankamal — Fri, 03 Apr 2009 09:16:28 GMT

hello all i am also facing same error ;and i didt use response.write() in my whole application;please suggest me something to avoid this error error sys.WebForms.PageRequestManagerParserErrorException: The message received from the server could not be parsed. Common causes for this error are when the response is modified by calls to Response.Write(), response filters, HttpModules, or server trace is enabled.

Re: How to resolve "Sys.WebForms.PageRequestManagerParserErrorException" issue

raviraj_shelke — Fri, 06 Feb 2009 12:10:25 GMT

I have the same problem.

When session expires and page get redirected to login page , them PageRequestManager/script manager can not parse the responce which contain <html> tag.

I can not remove burron outside of the update panel as it will always post back the page and then their is no use of update panel.

Is any one can help or can PageRequestManager can be updated to handel such issues so thet it will simply redirect the browser to new page.

Re: How to resolve "Sys.WebForms.PageRequestManagerParserErrorException" issue

CTGuy67 — Mon, 19 Jan 2009 12:42:44 GMT

Nope. I decide to just roll over and play dead. Any server that Ajax doesn't work right, I just turn it off.

Someday somewhere someone smarter than I will solve this.

Good luck...sorry I couldn't be more help.

Re: How to resolve "Sys.WebForms.PageRequestManagerParserErrorException" issue

ricaforrica — Sat, 17 Jan 2009 17:35:53 GMT

Hello Larryw!

Thanks for your tip! I added the javascript you suggested and the error went away, all started working as expected...

Unfortunately, only if the site is hosted in my development server, if i publish it to the production server I still get these errors (in a random frequency) :(

I suppose it has nothing to do with the client-side or with the database, so I suppose it may be related to IIS. Any configuration I could change in IIS 7 so that it works also in my development machine?

Thanks in advance for your help!

Ricardo.

Re: How to resolve "Sys.WebForms.PageRequestManagerParserErrorException" issue

ricaforrica — Sat, 17 Jan 2009 17:00:12 GMT

Hello CTGuy67!

Have you ever solved your problem concerning this Sys.WebForms.PageRequestManagerParserErrorException?

I have the exact same symptoms: all works well in my development server, but when I publish my web site to the production server, I get this error in a specific page (only in firefox).

It happens either in publish mode or copying all the code, and the strangest thing is that if use firefox inside the server I don't get any error!

I thank you in advance for your help.

Best regards,

Ricardo.

Re: How to resolve "Sys.WebForms.PageRequestManagerParserErrorException" issue

larryw — Mon, 13 Oct 2008 18:39:30 GMT

Long story short, I was receiving this error after modifiying our site for URL rewriting. Adding the following JavaScript solved it for me:

Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);

function EndRequestHandler(sender, args)
{
           if (args.get_error() != undefined)
           {
             args.set_errorHandled(true);location.reload(true);
           }
}

You can find out more about this error on the following link:

http://weblogs.asp.net/leftslipper/archive/2007/02/26/sys-webforms-pagerequestmanagerparsererrorexception-what-it-is-and-how-to-avoid-it.aspx?CommentPosted=true#commentmessage%20A

Re: How to resolve "Sys.WebForms.PageRequestManagerParserErrorException" issue

tehremo — Fri, 18 Jul 2008 12:12:38 GMT

For those who experience this with an expired session: http://forums.asp.net/t/1291762.aspx

I just went through this and this worked for me. Add the following to your web.config file:

</httpHandlers>
<httpModules>

Once I added this, my redirect on expired sessions started working again. I could still see the js error happening before the redirect, but for me this error is currently only happening when the session expires.

Re: How to resolve "Sys.WebForms.PageRequestManagerParserErrorException" issue

Sans — Fri, 18 Jul 2008 07:49:06 GMT

This might help: http://ranafaisal.wordpress.com/2008/06/02/responseredirect-in-aspnet-ajax/

I got the same error while using an update panel on an ajax-enabled website. I didn't have login or any of the causes enumerated in the error message.

Re: How to resolve "Sys.WebForms.PageRequestManagerParserErrorException" issue

Reddy4All — Tue, 27 May 2008 19:34:01 GMT

Hey Thanks guys...

I was facing the same issue... But After setting enablePartialRendering="false" solve my problem.

Thanks a lot for you guys...

Re: How to resolve "Sys.WebForms.PageRequestManagerParserErrorException" issue

RajkumarGS — Tue, 27 May 2008 08:42:58 GMT

Add this code after closing ContentTemplate.

</ContentTemplate>

<asp:PostBackTrigger ControlID="MessageBox1" />

</Triggers>

</asp:UpdatePanel>

ControlID should be the button or any control you click.

Re: How to resolve "Sys.WebForms.PageRequestManagerParserErrorException" issue

BhaveshPatel — Wed, 07 May 2008 22:18:36 GMT

EnableEventValidation="false" solved my problem.

Re: How to resolve "Sys.WebForms.PageRequestManagerParserErrorException" issue

CTGuy67 — Thu, 14 Feb 2008 16:03:19 GMT

This is ridiculous. I'm having the same issue everyone else is. Works fine in my development environment, but not on my live server, that is unless I run the web app from a browser on the server then everything works fine. I'm not using any kind of authentication or role management and it's not a web farm. Just using Ajax with EnablePartialRendering="true". Which like the above poster said is the primary reason to use Ajax. Here's another wrinkle, this doesn't happen with all the Ajax enabled web apps on the live server...just a select few.

I am at my wits end with this!