<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" ValidateRequest="false" %>  

<!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>無標題頁</title>  
</head>  
<body>  
    <form id="form1" runat="server">  
    <div>  
        <table id="TABLE1" runat="server" border="0" cellpadding="0" cellspacing="0">  
            <tr>  
                <td style="width: 393px">  
                    收信:<asp:TextBox ID="TextBox1" runat="server"></asp:TextBox><br />  
                    主題:<asp:TextBox ID="TextBox2" runat="server"></asp:TextBox><br />  
                    內(nèi)容:<asp:TextBox ID="TextBox3" runat="server" Height="154px" TextMode="MultiLine"  
                        Width="336px"></asp:TextBox><br />  
                    <asp:Button ID="Button1" runat="server" Text="發(fā)送" OnClick="Button1_Click" /></td>  
            </tr>  
        </table>  

    </div>  
        <table id="Table2" runat="server" border="0" cellpadding="0" cellspacing="0" visible="false">  
            <tr>  
                <td align="center" style="width: 400px">  
                    <asp:Label ID="Label1" runat="server" ForeColor="Red" Text="恭喜您，發(fā)表成功!"></asp:Label><br />  
                    <asp:Button ID="Button2" runat="server" Text="返回" OnClick="Button2_Click" /></td>  
            </tr>  
        </table>  
    </form>  
</body>  
</html> 

2、Default.aspx.cs代碼如下：

復制代碼代碼如下:

using System;  
using System.Data;  
using System.Configuration;  
using System.Web;  
using System.Web.Security;  
using System.Web.UI;  
using System.Web.UI.WebControls;  
using System.Web.UI.WebControls.WebParts;  
using System.Web.UI.HtmlControls;  
//倒入命名空間  
using System.Net;  
using System.Net.Mail;  

public partial class _Default : System.Web.UI.Page   
{  
    protected void Page_Load(object sender, EventArgs e)  
    {  

    }  
    protected void Button1_Click(object sender, EventArgs e)  
    {  
        ////設(shè)置發(fā)件人信箱,及顯示名字  
        MailAddress from = new MailAddress("zgdx0503@cpp114.com", "延邊職大信息中心");  
        //設(shè)置收件人信箱,及顯示名字   
        MailAddress to = new MailAddress(TextBox1.Text, "0503班");  
        //創(chuàng)建一個MailMessage對象  
        MailMessage oMail = new MailMessage(from, to);   

        oMail.Subject = TextBox2.Text;      //郵件標題         
        oMail.Body = TextBox3.Text;         //郵件內(nèi)容  

        oMail.IsBodyHtml = true;            //指定郵件格式,支持HTML格式          
        oMail.BodyEncoding = System.Text.Encoding.GetEncoding("GB2312");//郵件采用的編碼          
        oMail.Priority = MailPriority.High;//設(shè)置郵件的優(yōu)先級為高  

        //發(fā)送郵件服務(wù)器  
        SmtpClient client = new SmtpClient();  
        client.Host = "mail.cpp114.com";    //指定郵件服務(wù)器  
        client.Credentials = new NetworkCredential("zgdx0503@cpp114.com", "123456");//指定服務(wù)器郵件,及密碼  

        //發(fā)送  
        try  
        {  
            client.Send(oMail);  //發(fā)送郵件  
            Label1.Text = "恭喜你！郵件發(fā)送成功。";  
        }  
        catch  
        {  
            Label1.Text = "郵件發(fā)送失敗，檢查網(wǎng)絡(luò)及信箱是否可用。";  
        }  

        oMail.Dispose();        //釋放資源  

        TABLE1.Visible = false;  
        Table2.Visible = true;  
    }  
    protected void Button2_Click(object sender, EventArgs e)  
    {  
        //返回，繼續(xù)發(fā)送  
        Response.Redirect(Request.Url.ToString());  
        TABLE1.Visible = true;  
        Table2.Visible = false;  
    }  
} 