ASP.NET AJAX Networking and Web Services

Re: parse responseText or responseXML

sunny74 — Fri, 03 Jul 2009 04:56:15 GMT

Hi,

The website is good but problem not solved.

Re: parse responseText or responseXML

mudassarkhan — Thu, 02 Jul 2009 09:22:12 GMT

I think you should refer here it should help you

http://www.the-art-of-web.com/javascript/ajax/

Re: parse responseText or responseXML

sunny74 — Thu, 02 Jul 2009 08:56:44 GMT

Hi,

x.innerHTML does not work.

I have been trying to make this work for a week but not been able to do so till now.

The only way I have been able to access server data from clientscript is by using javascript proxy and web service.

Have u tried it ur self?

What r the other methods of server side functions from clientscript?

Thanks for ur reply.

Re: parse responseText or responseXML

mudassarkhan — Thu, 02 Jul 2009 07:02:40 GMT

though x returns an object but something wrong hence you are unable to create xmldocument

Also try innerHTML of x to get its content

Re: parse responseText or responseXML

sunny74 — Thu, 02 Jul 2009 06:54:18 GMT

mudassarkhan:
means nothing returned from the web service

Hi,

WEb service is returning data and therefore x is an object otherwise it would be null.

When I self run the webservice I can see it returning the xml which I given in the in my previous post.

It could be that the format is such that it is not able to create a xml document.

Should I return a Xml document from the web service.

Thanks.

Re: parse responseText or responseXML

mudassarkhan — Thu, 02 Jul 2009 06:25:44 GMT

means nothing returned from the web service

Re: parse responseText or responseXML

sunny74 — Thu, 02 Jul 2009 05:53:20 GMT

Hi,

mudassarkhan:
var data = x.documentElement.getElementByTagName("NewDataSet")[0];

I changed it to the above but I am getting the error below:

Microsoft JScript runtime error: 'documentElement' is null or not an object.

Where is the problem?

Re: parse responseText or responseXML

mudassarkhan — Thu, 02 Jul 2009 05:00:02 GMT

sunny74:
var data = x.documentElement.getElementByTagName("NewDataSet");

This like has issue data is acting as an array tag NewDataSet

hence change the above line to

var data = x.documentElement.getElementByTagName("NewDataSet")[0];

To get the first element

Re: parse responseText or responseXML

sunny74 — Wed, 01 Jul 2009 05:29:01 GMT

Hi,

My xml is this which is returned by a webservice:

<?xml version="1.0" encoding="utf-8" ?>
<string xmlns="http://tempuri.org/">
<NewDataSet>
<WR_district>
<state_name>
WEST BENGAL
</state_name>
<area>6751862238.46765</area>
<dist>BARDDHAMAN</dist>
<district_>438</district_>
<dstrict__1>295</dstrict__1>
<dstrict_po>454</dstrict_po>
<indiadpo_1>36</indiadpo_1>
<indiadpoly>309</indiadpoly>
</WR_district>
</NewDataSet>
</string>

Is it well formed or not?

and my code is this:

var xmlHttpObj = CreateXmlHttpRequestObject();

            if (xmlHttpObj != null) {

          xmlHttpObj.onreadystatechange = onResponse;
          alert('here');
          xmlHttpObj.open("GET", url, false);
          alert('here1')
          xmlHttpObj.setRequestHeader("Content-Type", "text/xml");
          //alert('here2');
          xmlHttpObj.send("arg1=" + tbname + "&arg2=" + pointWKT);
          alert('here3');
      }
      else {

          alert("Your browser does not support XMLHTTP.");
      }

Now xmlHttpObj.responseXML.documentElement is null but xmlHttpObj.responseXML is an object.But can I parse xmlHttpObj.responseXML.

Thanks for your reply.

Re: parse responseText or responseXML

mudassarkhan — Tue, 30 Jun 2009 14:13:43 GMT

Check whether the xnl structure is fine

and you are reading the right node

Re: parse responseText or responseXML

sunny74 — Tue, 30 Jun 2009 13:35:27 GMT

Hi MAK,

I went thru' the articles and I am trying to parse the xml in a similar way but xmlhttp.responseXML.documentElement is coming null in my case even though xmlhttp.status is 200.

As a result I am unable to parse the data as in ParseXml function.

How should I send the data from my webservice?

I am using IE but also want to do the same thing in FireFox.

Re: parse responseText or responseXML

mudassarkhan — Thu, 25 Jun 2009 11:06:04 GMT

You can refer these

http://aspalliance.com/1798_Building_a_Custom_ASPNET_Ajax_Enabled_Grid_Using_JavaScript.all

http://www.aspsnippets.com/post/2009/02/07/Custom-Ajax-Enabled-Grid-using-JavaScript-xmlhttp-in-ASPNet.aspx

I have done similar thing here

Re: parse responseText or responseXML

sunny74 — Thu, 25 Jun 2009 11:00:36 GMT

Thanks for your reply. It is returning data and it can be accepted either as Text or XML.In the receiving function if i use text then i can see a lot of things in HTML including things like style, web service methods etc. So I accept the text how do parse it to get the actual data avoiding the unnecessary ones? On the other hand if i accept it as xml, a document is being formed in the receiving function but unable to parse it.

Re: parse responseText or responseXML

Vince Xu - MSFT — Thu, 25 Jun 2009 05:34:27 GMT

Hi.

If it just returns text, please use responseText. Please check the reference http://www.w3.org/TR/XMLHttpRequest/

parse responseText or responseXML

sunny74 — Tue, 23 Jun 2009 11:06:32 GMT

Dear Friends,

I am getting response from an Ajax call to a webservice.The response is of two types
i.e responseText and responseXml.
My webservice is just returning a small string as this - POINT(73.7234375 25.151953125).
Now when I see responseText it is coming something very huge with HTML tags.

Now when I see responseXML it is coming like this:

<?xml version="1.0" encoding="utf-8" ?>
<string xmlns="http://tempuri.org/">POINT(73.7234375 25.151953125)</string>

But when I try to parse the ROOT Node and get its value I am unable to get it - I get only errors.

So how to get the value using responseXML and responseText.

My code is as below:

// function where response from Ajax call is obtained.

function state_Change() {
      if (req.readyState != 4) return;
      if (req.status == 200) {
       // I am getting HTTP_status 200
          //retrieve WKT and create markers
          //alert(req.status);
           //var xmldoc = req.responseXML;
          //alert(xmldoc);
          //alert(xmldoc.nodeName);
          //          alert(xmldoc.nodeName);
//          var ptdat = xmldoc.getElementsByTagName["string"][0];
          //alert(xmldoc.getElementsByTagName["string xlmns"][0]);
          //alert(ptdat.nodeValue);
          var IE = (window.ActiveXObject && document.all) ? true : false;
          if (IE) {

              var xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
              xmlDoc.async = "false";
              //alert("part1");
              var doc = req.responseText;
              alert(doc);
         }
    }
      else {
          alert("Problem retrieving XML data");
          return;
      }

}

I am using IE and FireFox.

Thanks for your responses.