Using JavaScript to call WebServices_javascript tips in VS2008

The tasks have been completed in the past few days, and there is nothing important. I took the time to learn the knowledge of WebServices. I find it quite interesting and not very difficult.

First, create an asp.net website using VS2008

Secondly, right-click on the project—>Add new item—>Web Service as shown below:

Two files, WebService.cs and WebService.asmx, will be generated
Add code in WebService.cs:

Copy code The code is as follows:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Services;
using System.Web.Script.Services;
///

///Summary description of WebService
///

[WebService(Namespace = "http://tempuri.org/")]
[WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
//Note to add the following code//
[ScriptService]
//To allow this web service to be called from a script using ASP.NET AJAX, uncomment the following line.
// [System.Web.Script.Services.ScriptService]
public class WebService : System.Web.Services.WebService
{
Public WebService()
{
//If using designed components, please uncomment the following line
​​​​ //InitializeComponent();
}
[WebMethod]
Public string HelloWorld()
{
         return "Hello World";
}
[WebMethod]
Public int GetSum(int a, int b)
{
         int sum = a b;
        return sum;
}
}

Default.aspx page

Copy code The code is as follows:

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %>
http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
http://www.w3.org/1999/xhtml">

   



   

   
   

       
           
               
           
       
       

       
        =
       
       

   

   

通过以上方法就可以轻松的调用WebService中的方法，WebService中也可以返回一个DataSet结果集。
后面还得继续学习WebService的知识。
如果大家有好的WebService学习的资料或者是网站的话，拿出来分享一下，以方便大家共同学习、交流。