How to send mail to another email id with attachment file

C# Code:

Attachment at = new Attachment(Server.MapPath(MemberPic)); //for attached file.... 'MemberPic' is file path , is string format…

                    MailMessage Msg = new MailMessage();

                    string FromMail = "support@softtechsolving.com";

                    string Password = "XXXXXX";  // "XXXXXX" is sender password…

                    Msg.From = new MailAddress(FromMail);

                    // Recipient e-mail address..

                    string ToMail = "softtechsolving@gmail.com";   //Receiver email id…

                    Msg.To.Add(ToMail);

                    string MsgBody = "Thank you…, Softtechsolving.. plz find attached file..";

                    AlternateView htmlMsgView = AlternateView.CreateAlternateViewFromString(MsgBody, null, MediaTypeNames.Text.Html);

                    Msg.AlternateViews.Add(htmlMsgView);

                    Msg.Subject = "Soft-Tech Solving;

                    Msg.Body = MsgBody;

                    //send the message

                    SmtpClient smtp = new SmtpClient("mail.softtechsolving.com");

                    //to authenticate we set the username and password properites on the SmtpClient

                    smtp.Credentials = new NetworkCredential(FromMail, Password);

                    Msg.Attachments.Add(at);

                    smtp.Send(Msg);

Namespace:

using System;

using System.Collections;

using System.Configuration;

using System.Data;

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.Data.SqlClient;

using System.IO;

using System.Net;

using System.Net.Mail;

using System.Net.Mime;