Skip to main content

How to call webservice from jquery, javascript

This article shows, how you can call your webservice (.asmx) or inline aspx web method from jquery that will prevent to invoke whole life cycle of an aspx page and work faster than update panel .

You can also check Creating Rest Services in with httphandlerHow To Create WCF Rest Services In Asp.NetSecurity in ajax webservice

For that perticuler task we can make webservice inside that perticuler project and call them from the javascript (does’n invoke whole page life cycle only call that perticuler webservice method and not fire any other event of server)

Below is the JavaScript/jquery (jquery provide .ajax method) code for calling webservice named LocalWS(taking one parrameter named Msg) communicating through the json datatype.

Calling WebService From JQuery Code :

<script src="">

function CallLocalWS() {
 try {
 var dat = "{Msg:'hello'}";
 var options = {
    type: "POST",
    url: "/LocalWS",
    data: dat,
    contentType: "application/json; charset=utf-8",
    dataType: "json",
    success: function(msg) {
        if (msg.d != "") {
        else {
              return false;
    error: function(xhr, ajaxOptions, thrownError) {
        alert(xhr.status +"  "+ thrownError +"  "+ ajaxOptions);

 catch (ex) {

Points :-
      If service method (webservice) is in aspx page then url should be as below :
          url: "/LocalWS"
          url: ""

      If service method is placed in separated asmx file then url should be as below :
          url: ""

Below is the javascirpt callable webservice is can be placed in the same aspx page or in a different asmx file you can write your service any two of the files

For calling a method of the webservice through the javascript or jquery you have to add [System.Web.Script.Services.ScriptMethod] attribute on the the top of the method.

C# Inline in .Aspx web method code :

// this will allow Web Service to be called from script, using ASP.NET AJAX or direct from javascipt .
public static string[] LocalWS(String Msg)
  string[] arr = new string[] { Msg+":Vivek", Msg+":Santosh"};
  return arr;

.Asmx file containing javascript callable web method :
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;

[WebService(Namespace = "")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
// this will allow Web Service to be called from script, using ASP.NET AJAX or direct from javascipt .
public class Javascriptcallable : System.Web.Services.WebService
    public Javascriptcallable() { }

    public static string[] LocalWS(String Msg)
        string[] arr = new string[] { Msg + ":Vivek", Msg + ":Santosh" };
        return arr;


Below is the html code to invoking the webservice through the button, after clicking the button webservice called asynchronously (must add return false; for asynchronously call)..

Html Code :

<asp:Button runat="server" ID="btnCall" Text="Click to Call" OnClientClick="CallLocalWS(); return false;" />

the output of the code is given bellow :- 

Popular posts from this blog

Merging multiple PDFs using iTextSharp in c#

In this article i will show you how to merge multiple pdfs into one using ITextSharp below is the two approach one is to pass your input files path, output file path (will be created if not exist) and another is pass direct input stream, output stream and it will write the merge files into output stream.

Uploading large file in chunks in Mvc c# from Javascript ajax

Often we have a requirement to upload files in, Mvc c# application but when it comes to uploading larger file, we always think how to do it as uploading large file in one go have many challenges like UI responsiveness, If network fluctuate for a moment in between then uploading task get breaks and user have to upload it again etc.

how $document.ready() is different from window.onload()

we often use window.onload() in javascript and $document.ready() in jquery and assume that both are same just jquery library wrap up javascript window.onload() and introduce $document.ready() but no there is much difference between them below is the explanation -

How to handle click event of linkbutton inside gridview

Recently I have posted how to sort only current page of gridview, Scrollble gridview with fixed header through javascript, File upload control inside gridview during postback and now i am going to explain how to handle click event of linkbutton or any button type control inside gridview.

We can handle click event of any button type control inside gridview by two way first is through event bubbling and second one is directly (in this type of event handling we need to access current girdviewrow container)