IMPORTANT CODE

Send Mail Code : - 

using System;
using System.Data;
using System.Configuration;
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;

///

/// Summary description for MailSending
///

public class MailSending
{
static string IP, UserName, Pwd;
public MailSending()
{
//
// TODO: Add constructor logic here
//
}
public static void SendMail(string To, string Subject, string Body)
{

IP = ConfigurationManager.AppSettings["IP"].ToString();
UserName = ConfigurationManager.AppSettings["UserName"].ToString();
Pwd = ConfigurationManager.AppSettings["Pwd"].ToString();

MailMessage message = new MailMessage("test@infosource.com", To, Subject, Body);
SmtpClient smtpClient = new SmtpClient(IP);
message.IsBodyHtml = true;
smtpClient.UseDefaultCredentials = false;
smtpClient.Credentials = new System.Net.NetworkCredential(UserName, Pwd);

smtpClient.Send(message);
}

}

 Fill grid through Linq

 private void  FillGrid()
        {
            DASEntities dasEnt=new DASEntities();

            var query =
                from c in dasEnt.Users
                        select new { c.Id,c.Name,c.Age};
 
            Dgv1.DataSource = query.ToList();
            Dgv1.DataBind();
            }

    }