ASP.NET - How to call an ASP.NET web service from client script?

A very simple web service to add 2 numbers:

<%@ WebService Language="C#" class=MyMath %>

using System;
using System.Web.Services;

  public class MyMath 
{

  [WebMethod]
  public int add(int a, int b)
  {
       return a + b;
  }

  [WebMethod]
  public int subtract(int a, int b)
  {
       return a - b;
  }

}

  A simple test page:

  <html>
  <head>
  <script language="JavaScript">
  var iCallID;

  function init()
  {
       service.useService("ws2.asmx?WSDL","math");
  }

 function onmyresult()
{
       if((event.result.error)&&(iCallID==event.result.id))
  {
       var xfaultcode = event.result.errorDetail.code;
       var xfaultstring = event.result.errorDetail.string;
       var xfaultsoap = event.result.errorDetail.raw;

       // Add code to output error information here
       alert("Error ");
  }
  else
  {
       service.innerHTML= "The method returned the result : " +   event.result.value;
  }
}


  function tst()
  {
       iCallID = service.math.callService("Add",ip1.value,ip2.value);
  }

</script>
</head>
<body onload="init();">
<BR>
Enter first Value <input type='text' id='ip1'>
<BR>
Enter Second value <input type='text' id='ip2'>
<BR>
<button onclick=javascript:tst()>Call Add Web Method</button>
<div id="service" style="behavior:url(webservice.htc)" onresult="onmyresult();">
</div>

</body>
</html>

Category:

ASP.NET

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ASP.NET example - How to call an ASP.NET web service from client script?

ASP.NET - How to call an ASP.NET web service from client script?