WebService的一个C#实例(VS2008)

下面我们来开发一个获取系统时间的WebService程序。WebService开发需要包含两个部分——服务提供端和客户端

1.服务提供端部分的实现

首先新建一个类型为ASP.NET Web服务应用程序的项目，取名为GetTime，下面是自动生成的代码using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Collections; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.ComponentModel; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Data; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Linq; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.Services; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.Services.Protocols; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Xml.Linq; namespace GetTime { /// <summary> /// Service1 的<a href="/tag/zhaiyao/" target="_blank" class="keywords">摘要</a>说明 /// </summary> [WebService(Namespace = "http://te<a href="/tag/mpu/" target="_blank" class="keywords">mpu</a>ri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] [Tool<a href="/tag/Box/" target="_blank" class="keywords">Box</a>Item(false)] // 若要允许使用 ASP.NET AJAX 从脚本中<a href="/tag/diaoyong/" target="_blank" class="keywords">调用</a>此 Web 服务，请取消对下行的注释。 // [Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.Script.Services.ScriptService] public class Service1 : Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.Services.WebService { [WebMethod] public string HelloWorld() { return "Hello World"; } } }

[WebMethod]表示要声明一个函数，客户端可以调用它，这里自动生成了一个HelloWorld函数，可以删掉，替换成自己的函数

using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Collections; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.ComponentModel; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Data; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Linq; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.Services; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.Services.Protocols; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Xml.Linq; namespace GetTime { /// <summary> /// Service1 的<a href="/tag/zhaiyao/" target="_blank" class="keywords">摘要</a>说明 /// </summary> [WebService(Namespace = "http://te<a href="/tag/mpu/" target="_blank" class="keywords">mpu</a>ri.org/")] [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)] [Tool<a href="/tag/Box/" target="_blank" class="keywords">Box</a>Item(false)] // 若要允许使用 ASP.NET AJAX 从脚本中<a href="/tag/diaoyong/" target="_blank" class="keywords">调用</a>此 Web 服务，请取消对下行的注释。 // [Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.Script.Services.ScriptService] public class Service1 : Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.Services.WebService { [WebMethod] public string getSysTime() { Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.DateTime currentTime = new Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.DateTime(); currentTime = Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.DateTime.<a href="/tag/Now/" target="_blank" class="keywords">Now</a>; return currentTime.ToString(); } } }

这样服务提供端就完成了。下面开始写客户端：

新建一个窗体程序或者网页，将刚才的编写的服务提供端WebService添加为引用。

这里以网页作为例子：

在网页中添加一个label和一个button，当单击button时label显示时间，网页的代码如下：

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Client.aspx.cs" Inherits="GetTime.Client" %> <!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>无<a href="/tag/biaoti/" target="_blank" class="keywords">标题</a>页</title> </head> <body> <form id="form1" runat="server"> <div> <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label> <br /> <asp:Button ID="Button1" runat="server" onclick="Button1_Click" Text="Button" /> </div> </form> </body> </html>

为单击button添加消息响应函数，网页后台代码如下：

using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Collections; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Con<a href="/tag/fig/" target="_blank" class="keywords">fig</a>uration; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Data; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Linq; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.S<a href="/tag/ecurity/" target="_blank" class="keywords">ecurity</a>; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.UI; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.UI.HtmlControls; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.UI.WebControls; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.UI.WebControls.WebParts; using Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Xml.Linq; namespace GetTime { public partial class Client : Sy<a href="/tag/stem/" target="_blank" class="keywords">stem</a>.Web.UI.Page { protected void Page_Load(object sender,EventArgs e) { } protected void Button1_Click(object sender,EventArgs e) { ServiceReference1.Service1SoapClient m_GetTime = new GetTime.ServiceReference1.Service1SoapClient(); Label1.Text = m_GetTime.getSysTime(); } } }

这样就OK了！

WebService的一个C#实例(VS2008)

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