简单WebService示例

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新建 WebService

Service.cs文件中的代码

using System;using System.Web;using System.Web.Services;using System.Web.Services.Protocols;[WebService(Namespace = "http://tempuri.org/")][WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]public class Service : System.Web.Services.WebService{ public Service() { //如果使用设计的组件，请取消注释以下行 //InitializeComponent(); } [WebMethod] public string HelloWorld() { return "简单WebService示例！"; } [WebMethod(Description = "求和方法")] public double Addition(double i, double j) { return i + j; } [WebMethod(Description = "求查方法")] public double Subtract(double i, double j) { return i - j; } [WebMethod(Description = "求积方法")] public double Multiplication(double i, double j) { return i + j; } [WebMethod(Description = "求商方法")] public double Division(double i, double j) { if (j != 0) return i / j; else return 0; }}

运行：

新建网站项目

添加web引用

Default.aspx页面文件代码

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" ><head runat="server"> <title>WebService调用示例</title></head><body> <form id="form1" runat="server"> <div> <asp:TextBox ID="txtNum1" runat="server" Width="50px"></asp:TextBox> <asp:DropDownList ID="ddlOper" runat="server"> <asp:ListItem Text="+" Value="+"></asp:ListItem> <asp:ListItem Text="-" Value="-"></asp:ListItem> <asp:ListItem Text="*" Value="*"></asp:ListItem> <asp:ListItem Text="/" Value="/"></asp:ListItem> </asp:DropDownList> <asp:TextBox ID="txtNum2" runat="server" Width="50px"></asp:TextBox> <asp:Button ID="btnSubmit" runat="server" Text="=" OnClick="btnSubmit_Click" /> <asp:TextBox ID="txtResult" runat="server" Width="70px"></asp:TextBox> <br /> <br /> <asp:Label ID="lblMessage" runat="server" ForeColor="red" Text=""></asp:Label></div> </form></body></html>

Default.aspx.cs类文件中的代码

using System;using System.Data;using System.Configuration;using System.Collections;using System.Web;using System.Web.Security;using System.Web.UI;using System.Web.UI.WebControls;using System.Web.UI.WebControls.WebParts;using System.Web.UI.HtmlControls;public partial class _Default : System.Web.UI.Page{ protected void Page_Load(object sender, EventArgs e) { } protected void btnSubmit_Click(object sender, EventArgs e) { if (txtNum1.Text.Trim() != "" && txtNum2.Text.Trim() != "") ; { double i = Convert.ToDouble(txtNum1.Text.Trim()); double j = Convert.ToDouble(txtNum2.Text.Trim()); //实例化引用WebService对象 hello.Service webSer = new hello.Service(); string Oper = ddlOper.SelectedValue; switch (Oper) { //通过Webservice对象调用Webservice中编写的方法 case "+": txtResult.Text = webSer.Addition(i, j).ToString(); break; case "-": txtResult.Text = webSer.Subtract(i, j).ToString(); break; case "*": txtResult.Text = webSer.Multiplication(i, j).ToString(); break; case "/": txtResult.Text = webSer.Division(i, j).ToString(); break; } lblMessage.Text = webSer.HelloWorld(); } }}

运行网站程序显示效果图