Comments on: HTTPHandler with JSON Data

By: cellular on wheels

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By: how to find gold

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By: Moise Ndala

Moise Ndala — Wed, 28 Mar 2012 00:15:06 +0000

Nicely done. Thanks Ben.
I had to add these two lines for the status for Firefox browser to display properly my response (I am using Visual Studio 2010 Entity Framework 4):
// Put the Header
Response.Status = “400 Bad Request”;
Response.StatusCode = 400;

This might help other people having the same issue.

By: Brittanie Rehler

Brittanie Rehler — Mon, 19 Mar 2012 05:20:47 +0000

I really like what you guys are usually up too. Such clever work and coverage! Keep up the good works guys I’ve included you guys to blogroll.

By: Skylar

Skylar — Sat, 17 Dec 2011 00:12:43 +0000

Just what i was looking for. A perfect explanation with simple code and a good example. I need more coders like you on the web!

By: Dorian Ockey

Dorian Ockey — Wed, 16 Nov 2011 05:08:59 +0000

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By: Dinis Cruz

Dinis Cruz — Tue, 12 Jul 2011 13:41:03 +0000

Thanks this was very useful

FYI, here is this example with the JSON bit: http://o2platform.wordpress.co.....two-files/

By: Using jQuery to consume an ASP.NET Ashx from JSON in two files « O2Platform.com for Developers

Tue, 12 Jul 2011 13:37:14 +0000

[...] http://johnnycoder.com/blog/20.....json-data/ [...]

By: Simon

Simon — Fri, 17 Jun 2011 09:46:00 +0000

Ben,

Thanks for posting this, very useful article – Great to see ASHX being used for its intended purpose.

Cheers!
Simon.

By: Vim

Vim — Sat, 11 Jun 2011 01:15:57 +0000

How can I read the json string returned from custom httphandler in my calling asp.net page?

By: Matt

Matt — Wed, 18 May 2011 10:44:35 +0000

“At first, one may find the comments redundant and unnecessary, but really they are call for help. A code:comment ratio like this usually indicates you really need to focus on what’s happening with the code because if you aren’t paying attention, bad things might happen.”

I don’t understand what you are saying here. The comment:code ratio seems fine and completely irrelevant to the topic you are talking about. Nearly every project/company I have worked with has an aim to have a code:comment ratio like this and it IS good practice.

Please could you clarify what you meant?

By: Ashish Jiwane

Ashish Jiwane — Thu, 14 Oct 2010 15:30:12 +0000

//1.Test web service. [WebMethod(CacheDuration = 30, Description = "This is a testing purpose only for dot net developer.")] hello friend, i want to communication between device(mobile) and server side, so that our team is decided to work on web service in dot net. but the device used json response instead of xml and dot net web service return predefine xml response which is take more time to extract json string from the web service. Below code help to read the json response directlly without xml tag. Check the below test sample and let me know your comment. Thanks AshishJ //1.Test web service. [WebMethod(CacheDuration = 30, Description = "This is a testing purpose only for dot net developer.")] public void TestWebServiceJson() { String sJSonResponce = "{'GenInfo':[{'type':'Response', 'appname':'iBehavior'} ],'Registration':[{ 'categorylist':['catid':'value', 'category':'value', 'couponcount':'value']} ]}"; Context.Response.ContentType = "text/plain"; Context.Response.Write(sJSonResponce); }

By: Ben Griswold

Ben Griswold — Wed, 30 Sep 2009 03:08:43 +0000

Hi Mike. That’s a great question. I think my sample project may not have represented JSON very well. In most cases, one would simply serialize an object(s) to JSON rather than jumping through hoops building the string like I did in the sample. As long as your objects are serializable, I’m not sure there’s much concern with typos. Of course, your solution is one I hadn’t actually considered and should work perfectly well. I’m really glad to provided an alternative approach. Many thanks.

By: Mike French

Mike French — Wed, 30 Sep 2009 02:13:28 +0000

Ben,
Is there a benefit of using generic handlers to return JSON instead of using a Webservice with the ScriptService Attribute?

I’m able to return an array of any object type to a jTemplate. It seems compiling a string of the JSON is opening up more possibilities for typos.

That being said, I am fairly new to using jQuery, so I’m probably overlooking some plain explanation.

By: Ben Griswold

Ben Griswold — Mon, 15 Jun 2009 15:10:24 +0000

@Paul Allies – Thanks for the comments. I’m surprised, too, that few seem to use the generic handler — in examples anyway. IQueryable to Json, eh? I’ll stay on the lookout. Thanks.

By: Paul Allies

Paul Allies — Mon, 15 Jun 2009 08:35:48 +0000

Thanks for the post.

At least there’s one other person is also using the generic handler for ajax requests. I thought I’m the only one.

I too haven’t picked up any gotchas yet.

It would be nice though if we had a method of converting IQuerable to Json like in mvc

By: Ben Griswold

Ben Griswold — Tue, 24 Mar 2009 15:34:17 +0000

@Jeff Many thanks.

By: Jeff

Jeff — Tue, 24 Mar 2009 13:56:17 +0000

nice post! simple and easy to understand..

By: Ben Griswold

Ben Griswold — Tue, 16 Dec 2008 20:20:55 +0000

Oops. It’s there now. Thanks.

By: Frederik Vig

Frederik Vig — Tue, 16 Dec 2008 20:06:11 +0000

Any chance for a link to the code?