Send email via embed images into body in ASP

using System;
using System.Collections;
using System.Data;
using System.Data.SqlClient;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Text;
using System.IO;
using System.Web.Services;
using System.Globalization;
using System.Net.Mail;
using System.Net.Mime;
using System.Net;

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

    }

    protected void Send(object sender, EventArgs e)
    {
        string subject = "CNet";
        string body = "";
        string from = "from";
        string password = "pwd";
        string server = "mail.npgnet.ir";
        string to = "r.ghafari@npg.ir";

        try
        {
            MailMessage mail = new MailMessage();
            mail.To.Add(to);
            mail.From = new MailAddress(from, subject);
            mail.Subject = "Test with Image";
            string Body = "Welcome to codedigest.com!!<br><BR>Online resource for .net articles.<BR><img alt=\"\" hspace=0 src=\"cid:imageId\" align=baseline border=0 >";

            AlternateView htmlView = AlternateView.CreateAlternateViewFromString(Body, null, "text/html");
            LinkedResource imagelink = new LinkedResource(Server.MapPath(".") + @"\pic.gif", "image/gif");
            imagelink.ContentId = "imageId";
            imagelink.TransferEncoding = System.Net.Mime.TransferEncoding.Base64;
            htmlView.LinkedResources.Add(imagelink);
            mail.AlternateViews.Add(htmlView);
            SmtpClient smtp = new SmtpClient();
            smtp.Port = 25;
            smtp.Host = server;
            smtp.Credentials = new NetworkCredential(from, password);
            //smtp.DeliveryMethod = SmtpDeliveryMethod.PickupDirectoryFromIis;
            smtp.Send(mail);
        }
        catch (Exception ex)
        {
            Response.Write(ex.Message);
        }
    }
}