Question

How to access a Web-Service from JavaScript?

Asked by: GeoFox

Hello.

Guys , I'm currently learning to write web-services. So I wrote a simple web-service in C# , but I can't find anywhere , how to access it from JavaScript? I'm not strong in JS , but I will learn if you will give me right way.

By the way , what means that attributes : [ScriptService] , [ScriptMethod] ?
It will be great , if you will show it all on a simple example.

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Asked On
2008-06-03 at 00:54:58ID23452309
Tags

C# , JavaScript

,

FireFox 2

Topics

JScript

,

C# Programming Language

Participating Experts
1
Points
500
Comments
3

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Answers

 

by: GeoFoxPosted on 2008-06-03 at 04:11:42ID: 21699105

Ok , I will say other way.

I have a web-service .


How to access it from JS ?:

exaple test.js :

function AccessService()
{
    //What I need to do here?
}

[WebMethod]
public bool ValidateDate(string text)
{
   bool result = false; 
 
   if(!string.IsNullOrEmpty(text))
   {
      result = true;
   }
 
   return result;
}

                                              
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by: MogalManicPosted on 2008-06-03 at 04:38:57ID: 21699286

If you are using ASP.Net Atlas (AJAX for ASP.net), the work is already done for you all you need to do is access the "class" in your javascript method.  So in your example you have a class the code fragment.

The javascript would look something like this:
  function AccessService()
  {
    var dateField = $get('MyEntryId');
    var results=AjaxServices.ValidationService.ValidateDate(dateField.value);
    if (results) {
       var resultsField = $get('MyResultsDivID');
       resultsField.innerText="The date is valid!!!";
    }
  }

namespace AjaxServices {
    [System.Web.Script.Services.ScriptService]
    [WebService(Namespace = "http://xmlforasp.net")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    public class ValidationService : System.Web.Services.WebService {
 
        [WebMethod]
        public bool ValidateDate(string text)
        {
          bool result = false; 
          if(!string.IsNullOrEmpty(text))
          {
            result = true;
          }
 
          return result;
        }
    }
} 

                                              
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by: GeoFoxPosted on 2008-06-03 at 04:47:13ID: 31463474

Thanks!

20120131-EE-VQP-002

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