Comments on: ASP.NET AJAX using JSON – Here’s how.

By: Dave

Dave — Tue, 07 Apr 2009 16:15:43 +0000

Since neither of us know exactly what he was asking, we’ll just have to wait until he tells us.

I would differ with you re using ASMX or not, especially using it with jQuery.

By: Will

Will — Tue, 07 Apr 2009 15:54:54 +0000

@Dave,

He wants to access the json from a non-aspx page; he doesn’t say anything about the json source (though context would indicate that it would be from a Microsoft technology). That is, he can’t use the AJAX.NET script manager because he’s not using ASP.NET generated pages on the client side. I assumed he was using jQuery or some other 3rd-party AJAX framework.

If you’re only using json, why use asmx when there are simpler options? In this situation, asmx and the related framework are more trouble than they’re worth, particularly if you don’t work with them regularly (or in my case, at all).

Silly if you’re trying to do it the One True Way, but not if your time is worth something.

By: Dave

Dave — Mon, 06 Apr 2009 22:49:18 +0000

@Will,

He wants to remove the need for ASPX. Why would you emit json via aspx when you could do it with asmx? That’s just silly.

What he COULD do is use jQuery instead of ASPX which I’ve also covered on this site.

By: Will

Will — Mon, 06 Apr 2009 22:31:55 +0000

@jigar,

You can create an aspx page and send the json via the Response object.

In your Page_Load() event:

Response.Write( jsonString ); // string containing the json response
Response.End(); // Sends json string to the client, ends the response to avoid trailing asp.net html
Response.Close();

By: Dave

Dave — Mon, 26 Jan 2009 13:31:05 +0000

Luke,

See my article from this morning, http://blog.dmbcllc.com/2009/01/26/aspnet-json-and-viewstate/ for the complete answer to your question.

By: Luke

Luke — Sun, 25 Jan 2009 22:29:43 +0000

If we update the value of a textbox or label via a JSON web service call – will the value of that textbox/label be written to the viewstate or whatever so that the server side code can see the new values that came from the JSON request?

By: jQuery, JSON, and ASP.NET

jQuery, JSON, and ASP.NET — Thu, 15 Jan 2009 16:19:51 +0000

[...] 15, 2009 By: Dave A few months ago, I demonstrated how to use ASP.NET’s JSON capabilities. Lately, I’ve been demonstrating how to use jQuery. Both use a considerable [...]

By: Dave

Dave — Thu, 21 Aug 2008 14:48:30 +0000

There is no clean way that I know of. I guess you could write it using ASPX and then copy and paste the result to HTML. But, it would be just as easy to implement caching on your ASPX page which would also give you better performance.

Why is HTML a requirement?

By: Jigar

Jigar — Thu, 21 Aug 2008 13:45:29 +0000

This approach requires us to have a aspx page on client side(from where the web service is called). Is there a way in which a plain html page or any other page can call json webservice from javascript?

By: pep

pep — Wed, 06 Aug 2008 19:47:34 +0000

I saw a full in depth article on this at dotnettutorials.com.

By: Dew Drop - August 4, 2008 | Alvin Ashcraft's Morning Dew

Dew Drop - August 4, 2008 | Alvin Ashcraft's Morning Dew — Mon, 04 Aug 2008 13:28:40 +0000

[...] ASP.NET AJAX Using JSON – Here’s How (Dave M. Bush) [...]