客户端访问WebService

服务器端释放WebService方法
•编写一个普通的ASP.NET WebService
•为WebService类添加自定义属性标记
–ScriptServiceAttribute
•释放WebService方法
–访问级别为public
–使用WebMethodAttribute进行标记
•为页面中的ScriptManager(Proxy)引入asmx文件

客户端访问WebService
•[Namespaces.]ClassName.MethodName
•依次传入参数
•传入一个方法做为成功后的回调函数
•即使没有返回值也会调用回调函数

客户端访问WebService基础
aspx

    <form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server" ScriptMode="Debug">
            <Services>
                <asp:ServiceReference Path="WebServiceFoundation.asmx" InlineScript="true" />
            </Services>
        </asp:ScriptManager>
        
        <input type="button" value="Get Random" onclick="getRandom()" />
        <input type="button" value="Get Range Random" onclick="getRandom(50, 100)" />
        
        <script language="javascript" type="text/javascript">
            function getRandom(minValue, maxValue)
            {
                if (arguments.length != 2)
                {
                    Sample.WebServiceFoundation.GetRandom(getRandomSucceeded);
                }
                else
                {
                    Sample.WebServiceFoundation.GetRangeRandom(minValue, maxValue, getRandomSucceeded);
                }
            }
            
            function getRandomSucceeded(result)
            {
                alert(result);
            }
        </script>
    </form>

cs

    protected void Page_Load(object sender, EventArgs e)
    {

    }

WebServiceFoundation.asmx

<%@ WebService Language="C#" Class="Sample.WebServiceFoundation" %>

using System;
using System.Web;
using System.Web.Services;
using System.Web.Services.Protocols;
using System.Web.Script.Services;

namespace Sample
{
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [ScriptService]
    public class WebServiceFoundation : System.Web.Services.WebService
    {
        [WebMethod]
        public int GetRandom()
        {
            return new Random(DateTime.Now.Millisecond).Next();
        }

        [WebMethod]
        public int GetRangeRandom(int minValue, int maxValue)
        {
            return new Random(DateTime.Now.Millisecond).Next(minValue, maxValue);
        }
    }
}