Comments on: Boost ASP.NET performance with deferred content loading

By: Dave Ward

Dave Ward — Mon, 11 Jan 2010 16:37:29 +0000

As far as I know, you can’t avoid that with ScriptServices and page methods. Their serializer (JavaScriptSerializer) treats all strings as utf-8 strings, which is the escaping you’re seeing.

By: Josh

Josh — Mon, 11 Jan 2010 15:58:49 +0000

I’m using webservices in a similar manner to inject html on demand…however I’m finding that the output is very escaped, while I don’t need it to be. (Thus making the output much larger than I would like!)

Example:
{“d”:”\u003cp xmlns:user=\”test\”\u003e\u003cb\u003eYou must first select events for your meet, before you can enter a time schedule.\u003c/b\u003e\u003c/p\u003e”} instead of simply:
{“d”:’You must first select events for your meet, before you can enter a time schedule.‘}

Is there a way to prevent the webservice from escaping the string?

By: Dave Ward

Dave Ward — Wed, 06 Jan 2010 17:03:27 +0000

That’s a screenshot of Firebug’s “net” tab.

By: Matt

Matt — Wed, 06 Jan 2010 16:53:21 +0000

Hi Dave,

Great article, just for interest, what tool did you use to get those load timings for your 10 requests graphic at the top?

Thanks
Matt

By: Dave Ward

Dave Ward — Mon, 04 Jan 2010 15:38:12 +0000

Are you rendering the GridView within a user control, as shown in the example?

If you step through the service method in the debugger, does writer.ToString() contain the correct HTML?

By: John

John — Mon, 04 Jan 2010 15:23:52 +0000

Cannot seem to get this to work with a gridview. I see the gridview get populated when I step through the debugger, but something is not updating the page. I’ve even simplified my test example, no luck. I do get your example working without problems.

By: Muahmmed Qasim

Muahmmed Qasim — Mon, 14 Dec 2009 08:50:22 +0000

Great job dude, it’s very good thanks for you solution

By: Ian Black

Ian Black — Wed, 04 Nov 2009 10:56:08 +0000

Slava: I was getting the same problem but I managed to solve it by wrapping the contents of my usercontrol in form tags with runat=”server”. This allows you to use server controls in there as well.

By: madval

madval — Thu, 04 Jun 2009 00:53:29 +0000

I forgot to mention my project name is jQueryPruebas and this example is in a folder named DeferredContentLoading. The webservice namespace is jQueryPruebas.DeferredContentLoading

By: madval

madval — Thu, 04 Jun 2009 00:51:30 +0000

Hi, thank you Dave.

I had the same trouble as Tobin and Greg: RSSReader webservice is undefined. The javascript proxy was being injected, and it was defined (in my project) as jQueryPruebas.DeferredContentLoading.RSSReader, so in Default.js I changed the line in AppInit function, from:

RSSReader.GetRSSReader(OnSuccess, OnFailure);

to:

jQueryPruebas.DeferredContentLoading.RSSReader.GetRSSReader(OnSuccess, OnFailure);

and the example worked, tested in FF3 & IE8

By: AJAX links « bnotezz

AJAX links « bnotezz — Sat, 30 May 2009 18:41:41 +0000

[...] Base Type ExtensionsExtending JavaScript with ASP.NET AJAXASP.NET Ajax Under-the-hood SecretsBoost ASP.NET performance with deferred content loadingAre you making these 3 common ASP.NET AJAX mistakes?Why ASP.NET AJAX UpdatePanels are [...]

By: obsługa kart płatniczych szczecin

obsługa kart płatniczych szczecin — Fri, 13 Mar 2009 09:21:35 +0000

Thanks a lot for sharing this nice approach.The javascript can be simplified by actually placing the loading progress div within the div you want the content to load in.

By: marc

marc — Mon, 23 Feb 2009 08:16:38 +0000

I managed to inject style and javascript by using a literal but I had to defer the script in order to make it work. Defer is only supported by IE. Style injection worked with Firefox and IE but not Chrome!

Hope that help.

By: Dave Ward

Dave Ward — Sat, 27 Dec 2008 00:47:16 +0000

Postbacks and the events of server controls such as the DataGrid aren’t going to work in this scenario. However, it’s not very difficult to implement true client-side paging in similar fashion. See this example: http://encosia.com/2008/08/20/easily-build-powerful-client-side-ajax-paging-using-jquery/

By: Chriss Khabbaz

Chriss Khabbaz — Mon, 22 Dec 2008 18:00:22 +0000

Guys,

I have been using another way to get the rendered html of a control.
It is a datagrid that i create dynamically…
I bind it, i create the html by rendering it…

I get the results….by calling the page method.
But i have a problem i cannot seem to have a solution for no matter how i search for…Paging does not work…I added handlers for item databound and they are working, however how can i solve paging using the json instead of the update panel…

Thanks for all the help.

Chriss.