c#邮箱发送和接收

简洁版发送：

//web.config ---文件

<?xml version="1.0" encoding="utf-8"?>

</appSettings>
<system.web>
<compilation debug="false" targetFramework="4.5" />
<httpRuntime targetFramework="4.5" />
</system.web>

</configuration>

//Defult.aspx ---文件

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

<!DOCTYPE html>


//Defult.aspx.cs ---文件
using System;

using System.Collections.Generic;

using System.Linq;

using System.Net;

using System.Net.Mail;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

public partial class _Default : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {

    }

    protected void Button1_Click(object sender, EventArgs e)

    {

        //发送邮件

        SmtpClient smtp = new SmtpClient("smtp.163.com");

        //设置邮件类型（1.发送者 2.接受者 3.邮件体 4.登录信息）

        //1.

        string address = System.Configuration.ConfigurationManager.AppSettings["email"].ToString();

        MailAddress from = new MailAddress(address);

        //2.

        MailAddress to = new MailAddress(tetTo.Text);

        //3.

        MailMessage mail = new MailMessage(from,to);

        mail.Subject = tetSubject.Text;

        mail.Body = tetBody.Text;

        //4.

        string pwd = System.Configuration.ConfigurationManager.AppSettings["password"].ToString();

        NetworkCredential cred = new NetworkCredential(address,pwd);

        smtp.Credentials = cred;

        smtp.DeliveryMethod = SmtpDeliveryMethod.Network;

        //发送

        smtp.Send(mail);

    }

}

二、完全版发送接收：（在这个方法中需要用到OpenPop.dll文件链接：http://pan.baidu.com/s/1bnwjWJH）

//default.aspx ---文件

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

<!DOCTYPE html>

<asp:Repeater ID="Repeater1" runat="server">
<HeaderTemplate>
<ul>
</HeaderTemplate>
<FooterTemplate>
</ul>
</FooterTemplate>
<ItemTemplate>
<li>
<a href="Details.aspx?id=<%# Eval("NO") %>">
<%# Eval("Subject") %>
<%--<%# ((DateTime)Eval("Date")).ToString("yyyy年MM月dd日hh时mm分ss秒") %>--%>
<% Eval("Date","{0:yyyy年MM月dd日hh时mm分ss秒}") %>
<%# Eval("FromSender") %>(<%# Eval("FromAddress") %>)
</a>
</li>
</ItemTemplate>
</asp:Repeater>

</div>
</form>
</body>
</html>

//default.aspx.cs ---文件

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using OpenPop.Pop3;
using OpenPop.Mime;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
List<MailItem> list = new List<MailItem>();

//实例化pop3访问对象
Pop3Client pop3 = new Pop3Client();
//链接到邮件服务器
pop3.Connect("pop3.sina.com",110,false);
//身份验证
pop3.Authenticate("z1n10527@sina.com","abcde12345");

//读邮件列表
//1.获取邮件的个数
int count = pop3.GetMessageCount();
//2.遍历显示出来
for (int i = 1; i <= count; i++)
{
Message msg = pop3.GetMessage(i);
MailItem data = new MailItem();
data.NO = i;
data.FromAddress = msg.Headers.From.Address;//发送者的邮箱地址
data.FromSender = msg.Headers.From.DisplayName;//发送者的名子
data.Date = msg.Headers.DateSent;//邮件的发送时间
data.Subject = msg.Headers.Subject;//邮件的主题
data.Body = msg.MessagePart.GetBodyAsText();
list.Add(data);
}
//断开链接
pop3.Disconnect();

//绑定显示
Repeater1.DataSource = list;
Repeater1.DataBind();
}
}

public class MailItem
{
public int NO { get; set; }
public string FromSender { get; set; }
public string FromAddress { get; set; }
public DateTime Date { get; set; }
public string Subject { get; set; }
public string Body { get; set; }
}

//details.aspx ---文件

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Details.aspx.cs" Inherits="Details" %>

<!DOCTYPE html>

标题：<asp:Label ID="lblSubject" runat="server" Text="Label"></asp:Label>
<br />
发送者：<asp:Label ID="lblSender" runat="server" Text="Label"></asp:Label>
<br />
时间：<asp:Label ID="lblDate" runat="server" Text="Label"></asp:Label>
<br />
内容：<br />
<asp:Label ID="lblBody" runat="server" Text="Label"></asp:Label>
<br />

</div>
</form>
</body>
</html>


//details.aspx.cs  ---文件

using System;

using System.Collections.Generic;

using System.Linq;

using System.Web;

using System.Web.UI;

using System.Web.UI.WebControls;

using OpenPop.Pop3;

using OpenPop.Mime;

public partial class Details : System.Web.UI.Page

{

    protected void Page_Load(object sender, EventArgs e)

    {

        if (Request["id"] != null)

        {

            //获取邮件代号

            int no = Convert.ToInt32(Request["id"]);

            //根据邮件代号查找邮件

            Pop3Client pop3 = new Pop3Client();

            pop3.Connect("pop3.sina.com",110,false);

            pop3.Authenticate("z1n10527@sina.com","abcde12345");

            Message msg =pop3.GetMessage(no);

            //显示

            lblSubject.Text = msg.Headers.Subject;

            lblSender.Text = msg.Headers.From.DisplayName + msg.Headers.From.Address;

            lblDate.Text = msg.Headers.DateSent.ToString();

            lblBody.Text = msg.MessagePart.GetBodyAsText();

            //断开链接

            pop3.Disconnect();

        }

    }

}

一、邮件发送：.NET中自带SMTP邮件发送的类——SmtpClient

第一步：导入命名空间：

using System.Net.Mail;
using System.Net;

第二步：编写邮件发送代码：

//1.实例化发邮件的类
SmtpClient smtp = new SmtpClient("smtp.sina.com");

//2.构建邮件对象。邮件对象常见的一般包括：发送邮箱，接收邮箱，标题，内容四大部分

MailAddress from = new MailAddress("z1n10527@sina.com"); //发送者的邮箱地址
MailAddress to = new MailAddress("z1n10426@sina.com"); //接收者的邮箱地址
MailMessage mail = new MailMessage(from, to); //实例化邮件对象
mail.Subject = txtSubject.Text; //邮件的标题
mail.Body = txtBody.Text; //邮件的内容

//3.设置邮箱登录验证凭据

NetworkCredential cred = new NetworkCredential("发送者的邮箱用户名","发送者的邮箱密码"); //创建凭据对象
smtp.Credentials = cred; //把凭据对象赋给邮件发送类

//4.发送

smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
smtp.Send(mail);

二、邮件接收：.NET中没有POP3邮件接收的类，邮件的内容和格式比复杂，手动写代码进行解析很麻烦，也容易出错，开发中我们可以借助第三方插件来实现。

OpenPOP.NET插件的地址：http://sourceforge.net/projects/hpop/

第一步：添加引用：OpenPop.dll

第二步：导入命名空间：

using OpenPop.Pop3;

using OpenPop.Mime;

第三步：编写邮件实体类：

public class MailItem

{

public int NO { get; set; }

public string FromSender { get; set; }

public string FromAddress { get; set; }

public DateTime Date { get; set; }

public string Subject { get; set; }

public string Body { get; set; }

}

第四步：编写邮件读取代码

protected void Page_Load(object sender, EventArgs e)

    {

        List<MailItem> list = new List<MailItem>();

        //实例化pop3访问对象

        Pop3Client pop3 = new Pop3Client();

        //链接到邮件服务器

        pop3.Connect("pop3.sina.com",110,false);

        //身份验证

        pop3.Authenticate("z1n10527@sina.com","abcde12345");

        //读邮件列表

        //1.获取邮件的个数

        int count = pop3.GetMessageCount();

        //2.遍历显示出来

        for (int i = 1; i <= count; i++)

        {

            Message msg = pop3.GetMessage(i);

            MailItem data = new MailItem();

            data.NO = i;

            data.FromAddress = msg.Headers.From.Address;//发送者的邮箱地址

            data.FromSender = msg.Headers.From.DisplayName;//发送者的名子

            data.Date = msg.Headers.DateSent;//邮件的发送时间

            data.Subject = msg.Headers.Subject;//邮件的主题

            data.Body = msg.MessagePart.GetBodyAsText();

            list.Add(data);

        }

        //断开链接

        pop3.Disconnect();

        //绑定显示

        Repeater1.DataSource = list;

        Repeater1.DataBind();

    }

}

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c#邮箱发送和接收

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