asp.net ajax动态显示时间
- <%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
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- <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
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- <html xmlns="http://www.w3.org/1999/xhtml">
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- <head runat="server">
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- <title>ajax动态显示时间 </title>
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- <script language="javascript" type="text/javascript">
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- function btnInvoke_onclick()
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- {
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- var txtName=$get("txtName").value;
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- PageMethods.SayHello(txtName,SayHelloShow);
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- }
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- function SayHelloShow(res)
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- {
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- $get("result").innerHTML=res;
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- }
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- function TimeCall()
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- {
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- setInterval("btnInvoke_onclick()",1000);
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- }
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- </script>
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- </head>
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- <body onload="TimeCall()">
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- <form id="form1" method="get" runat="server">
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- <asp:ScriptManager ID="sm" runat="server" EnablePageMethods="true" />
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- <input type="text" id="txtName" value="动态时间 " />
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- <input type="button" id="btnInvoke" value="测试" onclick="return btnInvoke_onclick()" />
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- <div id="result" style="color:Red;" ></div>
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- <br />
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- <textarea id="TraceConsole" rows="10" cols="50" />
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- </form>
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- </body>
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- </html>
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- using System;
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- using System.Data;
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- using System.Configuration;
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- using System.Web;
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- using System.Web.Security;
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- using System.Web.UI;
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- using System.Web.UI.WebControls;
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- using System.Web.UI.WebControls.WebParts;
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- using System.Web.UI.HtmlControls;
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- using System.Web.Services;
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- public partial class _Default : System.Web.UI.Page
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- {
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- protected void Page_Load(object sender, EventArgs e)
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- {
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- }
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- [WebMethod]
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- public static string SayHello(string name)
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- {
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- return string.Format("你好{0}!现在时间:{1}", name, DateTime.Now.ToString());
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- }
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- }
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- 注意:
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- 1 <asp:ScriptManager ID="sm" runat="server" EnablePageMethods="true" />中的EnablePageMethods
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- 要为true,表示客户端页面能直接调用服务器端页面的静态方法.
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- 2
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- [WebMethod]
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- public static string SayHello(string name)
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- {
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- return string.Format("你好{0}!现在时间:{1}", name, DateTime.Now.ToString());
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- }
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- 必须是静态方法.必须加[WebMethod]
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- 3 PageMethods.SayHello(txtName,SayHelloShow);
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- 表示服务器页面方法中的SayHello,SayHelloShow表示回调函数,主要用于前台显示
原文地址:https://www.cnblogs.com/liufei88866/p/1255808.html