vs2003 和 vs2005 下的发邮件代码

vs2003下的代码:

using System;

using System.Collections;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Web;

using System.Web.Util;

using System.Web.Mail;

using System.Web.SessionState;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.HtmlControls;



namespace LotteryInfo

{

	/// <summary>

	/// email 的摘要说明。

	/// </summary>

	public class email : System.Web.UI.Page

	{

		protected System.Web.UI.WebControls.TextBox TextBox1;

		protected System.Web.UI.WebControls.TextBox TextBox2;

		protected System.Web.UI.WebControls.TextBox TextBox3;

		protected System.Web.UI.WebControls.TextBox TextBox5;

		protected System.Web.UI.HtmlControls.HtmlInputFile attachment;

		protected System.Web.UI.WebControls.Label Label1;

		protected System.Web.UI.WebControls.TextBox TextBox4;

		protected System.Web.UI.WebControls.Button Button1;

	

		private void Page_Load(object sender, System.EventArgs e)

		{

			// 在此处放置用户代码以初始化页面

		}



		#region Web 窗体设计器生成的代码

		override protected void OnInit(EventArgs e)

		{

			//

			// CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。

			//

			InitializeComponent();

			base.OnInit(e);

		}

		

		/// <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.Button1.Click += new System.EventHandler(this.Button1_Click);

			this.Load += new System.EventHandler(this.Page_Load);



		}

		#endregion



		private void Button1_Click(object sender, System.EventArgs e)

		{

			MailMessage mailobj=new MailMessage();

			mailobj.From=TextBox1.Text.Trim();

			mailobj.To=TextBox2.Text.Trim();

			mailobj.Subject=TextBox3.Text.Trim();

			

			string s_body=TextBox5.Text.ToString();

	

			s_body=s_body.Replace("\r\n","<br/>");

			s_body=s_body.Replace("\n","<br/>");

			s_body=s_body.Replace(" ","&nbsp");

			mailobj.Body=s_body;

			mailobj.BodyFormat=MailFormat.Html;

			mailobj.Priority=MailPriority.High;

		    int i=TextBox1.Text .Trim().ToString().IndexOf("@");

			string username=TextBox1.Text.Trim().Substring(0,i);

			string pwd=TextBox4.Text .Trim();



		   // mailobj.BodyEncoding=Mail

			

			

			if (attachment.PostedFile.ContentLength>0)

			{

				mailobj.Attachments.Add(new MailAttachment(attachment.PostedFile.FileName));

			}



			try

			{

			mailobj.Fields.Add("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate", "1");  

			mailobj.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendusername", username);   

			mailobj.Fields.Add("http://schemas.microsoft.com/cdo/configuration/sendpassword",pwd); 

				//mailobj.Fields.Add()

			

			

			SmtpMail.SmtpServer="smtp.163.com";

		

			SmtpMail.Send(mailobj);

			Label1.Text="邮件发送成功!";

				TextBox5.Text="";



		

			Response.Write("ok;");

		   }

		catch

		

			{

			Response.Write("<script language ='javascript'>alert('sorry!');<script>");

		   }

			

		}

	}

}

vs2005  下的

using System;
using System.Data;
using System.Configuration;
using System.Collections;
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;
using System.Net;
using System.Net.Mail;

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

    }
    protected void Button1_Click(object sender, EventArgs e)
    {

        string s_from = TextBox1.Text.Trim().ToString();
        string s_to = TextBox3.Text.Trim().ToString();
        string pwd=TextBox2.Text .Trim().ToString();
        string s_body =TextBox5.Text.Trim().ToString();
        s_body = s_body.Replace("\r\n","<br/>");
        s_body = s_body.Replace("\n", "<br/>");
        s_body = s_body.Replace(" ", "&nbsp");

        int i = s_from.IndexOf("@");
        string username = s_from.Substring(0,i);

        MailAddress from = new MailAddress(s_from);
        MailAddress to = new MailAddress(s_to);
        MailMessage mailobj = new MailMessage(from ,to);
        mailobj.Subject = TextBox4.Text.Trim().ToString();
        mailobj.Body = s_body;
        mailobj.IsBodyHtml = true;
        mailobj.BodyEncoding = System.Text.Encoding.GetEncoding("GB2312");
        mailobj.Priority = MailPriority.High;

        if (FileUpload1.PostedFile.ContentLength > 0)
        {
            mailobj.Attachments.Add(new Attachment(  FileUpload1.PostedFile.FileName));
        }

        SmtpClient smtp = new SmtpClient("smtp.163.com");
       // smtp.Host = "smtp.163.com";
        smtp.UseDefaultCredentials = false;
        smtp.Credentials = new NetworkCredential(username,pwd);
        smtp.DeliveryMethod = SmtpDeliveryMethod.Network;

        try {
            smtp.Send(mailobj);
            Response.Write("ok!");
       
        }
        catch
       
        {
            Response.Write("sorry!");
        }
       
        
         }
}

因为用的邮箱都是163的,所以就设置了smtp的地址是163的地址,如果用别的邮箱,只要smtp的地址改下就可以了.