应项目需求，测试了下自动发送邮件的功能，以实现，下面分别介绍前台的Ajax和后台c#
前台：
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="SendEmail.aspx.cs" Inherits="SendEmail" %>
<!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>每隔十秒鐘自動發送Email</title>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="ScriptManager1" runat="server">
</asp:ScriptManager>
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:Timer ID="Timer1" runat="server" Interval="10000" ontick="Timer1_Tick">
</asp:Timer>
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
</ContentTemplate>
</asp:UpdatePanel>
<div>
</div>
</form>
</body>
</html>
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后台：
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using System.Net.Mail;
public partial class SendEmail : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
