You might find it best to isolate yourself from the “.d” issue using an approach like this one: http://encosia.com/2009/06/29/never-worry-about-asp-net-ajaxs-d-again/

You could definitely do that with an HttpHandler though. If you did that, also keep in mind that you can use the JavascriptSerializer class yourself to serialize and/or deserialize JSON within that low-level handler.

http://encosia.com/source/json-test-3.5.zip

You may be better served by looking through the jQuery category here and looking at the other examples that include source.

If it’s specifically the “.d” that’s causing you trouble, be sure to see this post in particular: Simplify calling ASP.NET AJAX services from jQuery

Mine is not working correctly and I want to see what the heck I am doing wrong.

thanks!

the overhead of serializing/deserializing will not very high anyway, changing the last webservice to xml and use linq will make it easier to make the webservice call but will not improve performance ?

The two academic questions are still,
1) Is there a way to return result from a webservice in raw mode. Like Context.response.Write or similar (so I can pass the json returns from the called webservice directly instead bypassing the Json serializing that normally happens automatically when you return.

2)Pick up the Json call parameters from the client Ajax caller for the webservice inside the webservice itself. Like Context.Request .. ?

Martin

Then I need to feed the HttpWebrequest with a post of Json serialized parameters and handle the deserialisation myself as would normally be done by javascrip on the client side.

Calling and getting the response from the remote webservice works perfect my only problem is that I want to pass the JSON parameter line invoking my webservice and pass that on to the next webservice without an extra serializing in between. Likewise I like to use the returned JSON serilized response to be directly back to the client side.

I have tried to write back Context.Response.Write(“{\”d\”:\”xx\”}”);

But it always returns missing d …
Likewise I have no idea on how to pick up the input Json parameters

Any ideas would be welcome

Regards
Martin

I removed the JavaScriptSerializer class and made it a return type of IEnumerable.

return OfTypeIEnumerableThatCallsAStaticPrivateMethod()

:)

Since I’m taking care of my “d” by Filtering it out (thanks to the datafilter)… my jTemplate should not reference it either. (BIG GOTCHA)

So instead of:

{$foreach $T.d as post}

it becomes

{$foreach $T as post}

so when I iterate… it works.

Thanks for catching that. I’ll try to post my solution in a more generic sense when I’m done.

Thanks a bunch!

I’m having a heck of a time getting it to work.

Basically calling a webservice:

return new JavaScriptSerializer().Serialize(OfTypeIEnumerable);

get back in Firebug (when d is stripped out):

"[{"ProductId":"1"},{"ProductId":"2"}]"

I’m using the jTemplate provided in your article as is (except inserting ProductId)

Getting nothing back, just an “uncaught exception 901″

My page is calling it like this:

 
        $.ajax({
            type: "POST",
            contentType: "application/json; charset=utf-8",
            url: "MyProd.asmx/HelloWorld",
            data: "{}",      
            datatype: "json",     
            dataFilter: function(data) {
 
                    var msg = eval('(' + data + ')');
                    if (msg.hasOwnProperty('d'))
                        return msg.d;
                    else
                        return msg;
                    },
            success: function(msg) {
 
             $('#Container').setTemplateURL('/templates/mytemp.htm');
             $('#Container').processTemplate(msg);
        }
       });

I have tried it with and without the datatype
Ideas?

Dave
Ward

Is there anything I ignore?

By the way I am using ASP.NET 2.0 AJAX Extensions 1.0.

Thanks a lot.