web service 实现无刷新返回一个表
Run_Table.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_Demo
{
/// <summary>
/// Run_Table 的摘要说明。
/// </summary> public class Run_Table : System.Web.Services.WebService { public Run_Table() { //CODEGEN: 该调用是 ASP.NET Web 服务设计器所必需的 InitializeComponent(); } private System.Data.SqlClient.SqlConnection sqlConnection1; #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() { this.sqlConnection1 = new System.Data.SqlClient.SqlConnection(); // // sqlConnection1 // this.sqlConnection1.ConnectionString = "workstation id=GW;packet size=4096;user id=sa;data source=GW;persist security inf" + "o=True;initial catalog=pubs;password="; } /// <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 doSearch(string id) { //SqlConnection cn=new SqlConnection(ConfigurationSettings.AppSettings["pubs"]); SqlDataAdapter da=new SqlDataAdapter("select ord_date,ord_num from sales where stor_id=@stor_id",sqlConnection1); string[] s={"7067","7131","7896","8042"}; Random Rand=new Random (); int i= Rand.Next(0,3); string temp=s[i]; da.SelectCommand.Parameters.Add(new SqlParameter("@stor_id",temp)); DataSet ds=new DataSet(); da.Fill(ds); return ds.GetXml(); } }
}WebForm1.aspx
<%@ Page language="c#" Codebehind="WebForm1.aspx.cs" AutoEventWireup="false" Inherits="WebService_Demo.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> function Init() { get_data() setInterval("get_data()",5000); } function get_data() { div1.innerHtml =""; docSubmit = new ActiveXObject("MSXML2.DOMDocument"); docSubmit.async = false; s="7131"; docSubmit.load("http://localhost/WebService_Demo/Run_Table.asmx/doSearch?id="+s); docSubmit.loadXML(docSubmit.xml.replace(/</g,"<").replace(/>/g,">")); // var s; s="<table borderColor=\"blue \" cellSpacing=\"1\" cellPadding=\"1\" border=\"1\" > <tr><td>标题1</td><td>标题2</td></tr>"; nodeList=docSubmit.documentElement.getElementsByTagName("Table"); for (i=0;i<nodeList.length;i++) { s=s+"<tr><td>"+nodeList(i).selectSingleNode("ord_num").text+"</td>"+"<td>" +nodeList(i).selectSingleNode("ord_date").text +"</td></tr>" } s+"</table>" div1.innerHTML=s; div1.style.visibility="visible"; } </script> </HEAD> <body MS_POSITIONING="GridLayout" onload="Init()"> <form id="Form1" method="post" runat="server"> <FONT face="宋体"></FONT> <div id="div1"><FONT face="宋体"> </FONT> </div> </form> </body></HTML>
web service 项目中
还有就是一定要在 web.config 中
<system.web>
中加上
<webServices> <protocols> <add name="HttpPost" /> <add name="HttpGet" /> </protocols></webServices>否则一直提示出错..
一定要加在你的 web service 项目中,其它地方就不用了......
demo 地址
https://files.cnblogs.com/gwazy/WebService_Demo.rar
