webservice 实现动态刷新
FeaturedService.asmx
using System;
using System.Collections;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Web;
using System.Web.Services;
using System.Data .SqlClient ;
namespace WebService
{
/**//// <summary>
/// FeaturedService 的摘要说明。
/// </summary>
public class FeaturedService : System.Web.Services.WebService
{
public FeaturedService()
{
//CODEGEN: 该调用是 ASP.NET Web 服务设计器所必需的
InitializeComponent();
}
组件设计器生成的代码#region 组件设计器生成的代码
//Web 服务设计器所必需的
private IContainer components = null;
/**//// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
}
/**//// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if(disposing && components != null)
{
components.Dispose();
}
base.Dispose(disposing);
}
#endregion
// WEB 服务示例
// HelloWorld() 示例服务返回字符串 Hello World
// 若要生成，请取消注释下列行，然后保存并生成项目
// 若要测试此 Web 服务，请按 F5 键
[WebMethod]
public string GetFeatured()
{
string strSelect;
SqlConnection conPubs;
SqlDataAdapter dadPubs;
DataSet dstTitles;
DataRow drowTitle;
Random objRanNum;
int intRanNum;
strSelect = "SELECT Title, isNull( Notes, '' ) Notes From Titles";
conPubs = new SqlConnection( "server=(local);database=pubs;uid=sa;pwd=" );
dadPubs = new SqlDataAdapter( strSelect, conPubs );
dstTitles = new DataSet();
dadPubs.Fill( dstTitles, "Titles" );
objRanNum = new Random();
intRanNum = objRanNum.Next( 0, dstTitles.Tables["Titles"].Rows.Count );
drowTitle = dstTitles.Tables["Titles"].Rows[intRanNum];
return drowTitle["Title"] + " - " + drowTitle["Notes"];
}
}
}
调用页面
<%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="WebService.WebForm1" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >
<HTML>
<HEAD>
<title>WebForm1</title>
<meta name="GENERATOR" Content="Microsoft Visual Studio .NET 7.1">
<meta name="CODE_LANGUAGE" Content="C#">
<meta name="vs_defaultClientScript" content="JavaScript">
<meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">
<script>
var intCallID = 0;
function Init()
{
GetNewFeatured();
setInterval( "GetNewFeatured()", 5000 )
}
function GetNewFeatured()
{
service.useService("FeaturedService.asmx?WSDL","FeaturedService");
intCallID = service.FeaturedService.callService( "GetFeatured" );
}
function Service_Result()
{
if (event.result.error)
{
divFeatured.innerText = event.result.errorDetail.string;
}
else
{
divFeatured.innerText = event.result.value;
}
}
</script>
</HEAD>
<body MS_POSITIONING="GridLayout" onload="Init()">
<form id="Form1" method="post" runat="server">
<table width="600">
<tr>
<td valign="top">
<h2>Welcome to this Web Site!</h2>
Browse this Web site to get great deals on the latest books!
</td>
<td>
<div id="service" style="behavior:url(webservice.htc)" onresult="Service_Result()"></div>
<div id="divFeatured" style="BORDER-RIGHT:darkgreen 1px solid;PADDING-RIGHT:10px;BORDER-TOP:darkgreen 1px solid;PADDING-LEFT:10px;PADDING-BOTTOM:10px;BORDER-LEFT:darkgreen 1px solid;WIDTH:200px;PADDING-TOP:10px;BORDER-BOTTOM:darkgreen 1px solid">
</div>
</td>
</tr>
</table>
</form>
</body>
</HTML>
实现效果
还有就是要注意那个webservice.htc文件.....
一定要放在程序目录下...
调用页面
实现效果
还有就是要注意那个webservice.htc文件.....
一定要放在程序目录下...
转载于:https://www.cnblogs.com/gwazy/archive/2005/05/10/152205.html