1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Web;
 5 using System.Web.Services;
 6 
 7 [WebService(Namespace = "http://tempuri.org/")]
 8 [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
 9 // 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。 
10 // [System.Web.Script.Services.ScriptService]
11 
12 public class Service : System.Web.Services.WebService
13 {
14     public Service () {
15 
16         //如果使用设计的组件，请取消注释以下行 
17         //InitializeComponent(); 
18     }
19 
20     [WebMethod]
21     public string HelloWorld() {
22         return "Hello World";
23     }
24     
25 }

 1 using System;
 2 using System.Collections.Generic;
 3 using System.Linq;
 4 using System.Web;
 5 using System.Web.Services;
 6 
 7 [WebService(Namespace = "http://tempuri.org/")]
 8 [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
 9 // 若要允许使用 ASP.NET AJAX 从脚本中调用此 Web 服务，请取消对下行的注释。 
10 // [System.Web.Script.Services.ScriptService]
11 
12 public class Service : System.Web.Services.WebService
13 {
14     public Service () {
15 
16         //如果使用设计的组件，请取消注释以下行 
17         //InitializeComponent(); 
18     }
19 
20     //[WebMethod]
21     //public string HelloWorld() {
22     //    return "Hello World";
23     //}
24     [WebMethod(Description = "求和的方法")]
25     public double addition(double i, double j)
26     {
27         return i + j;
28     }
29     [WebMethod(Description = "求差的方法")]
30     public double subtract(double i, double j)
31     {
32         return i - j;
33     }
34     [WebMethod(Description = "求积的方法")]
35     public double multiplication(double i, double j)
36     {
37         return i*j;
38     }
39     [WebMethod(Description = "求商的方法")]
40     public double division(double i, double j)
41     {
42         if (j != 0)
43         {
44             return i / j;
45         }
46         else {
47             return 0;
48         }
49     }
50 }

 1 <%@ Page Title="主页" Language="C#"  AutoEventWireup="true" MasterPageFile="~/Site.master" CodeFile="Default.aspx.cs" Inherits="_Default" %>
 2 <asp:Content ID="Content1" runat="server" ContentPlaceHolderID="HeadContent">
 3 </asp:Content>
 4 <asp:Content ID="BodyContent" runat="server" ContentPlaceHolderID="MainContent">
 5     <div>
 6         <asp:TextBox ID="Num1" runat="server"></asp:TextBox>
 7         <select id="selectOper" runat="server">
 8             <option>+</option>
 9             <option>-</option>
10             <option>*</option>
11             <option>/</option>
12         </select>
13         <asp:TextBox ID="Num2" runat="server"></asp:TextBox>
14         <span id = "E" runat="server"></span>
15         <asp:TextBox ID="Result" runat="server"></asp:TextBox>
16     </div>
17 </asp:Content>

 1 using System;
 2 using System.Data;
 3 using System.Configuration;
 4 using System.Collections.Generic;
 5 using System.Linq;
 6 using System.Web;
 7 using System.Web.Security;
 8 using System.Web.UI;
 9 using System.Web.UI.WebControls;
10 using System.Web.UI.WebControls.WebParts;
11 using System.Web.UI.HtmlControls;
12 
13 public partial class _Default : System.Web.UI.Page
14 {
15     protected void Page_Load(object sender, EventArgs e)
16     {
17         //在页面加载的时候动态创建一个按钮，在它的事件里调用Websercie
18         Button btn = new Button();
19         btn.Width = 24;
20         btn.Text = "=";
21         btn.Click += new EventHandler(btn_Click);
22         E.Controls.Add(btn);
23     }
24 
25     /// <summary>
26     /// 定义动态创建Button的Click事件，在这个事件中调用Webservice
27     /// </summary>
28     /// <param name="sender"></param>
29     /// <param name="e"></param>
30     void btn_Click(object sender, EventArgs e)
31     {
32         if (Num1.Text != "" && Num2.Text != "")
33         { 
34             //实例化引用的webservice对象
35             localhost.Service webserviceInstance = new localhost.Service();
36             int Oper = selectOper.SelectedIndex;
37             switch (Oper) { 
38                 //通过实例化的webservice对象来调用Webservice暴露的方法
39                 case 0:
40                     Result.Text = webserviceInstance.addition(double.Parse(Num1.Text), double.Parse(Num2.Text)).ToString();
41                     break;
42                 case 1:
43                     Result.Text = webserviceInstance.subtract(double.Parse(Num1.Text), double.Parse(Num2.Text)).ToString();
44                     break;
45                 case 2:
46                     Result.Text = webserviceInstance.multiplication(double.Parse(Num1.Text), double.Parse(Num2.Text)).ToString();
47                     break;
48                 case 3:
49                     Result.Text = webserviceInstance.division(double.Parse(Num1.Text), double.Parse(Num2.Text)).ToString();
50                     break;
51             }
52         }
53     }
54 }