Formatting an email in c#

Hii…
i wrote a sample c# code for sending an email, but my problem is i would like to send it like a formatted text.
eg: From :
Messgae Subject : Subject
Message Body : Body, FirstName LastName, telephone, mobile, address
all in break lines.as i’m new to this c# programming, can anyone pls help me out…
below is my c# code

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.Web.Mail;
using System.Drawing;

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

        }

        protected void Button_Click(object sender, EventArgs e)
        {
            if (ValidateForm1() == false)
            {
                SendMail();
            }
        }

        private void SendMail()
        {
            try
            {

                MailMessage mail = new MailMessage();
                mail.To = "xyz@somedomain.com";
                mail.From = Email.Text;
                mail.Subject = ("Title:" + Title.Text ("FirstName:") + FirstName.Text ("LastName:") + LastName.Text);
                mail.Body = Message.Text;
                //label.Text = "Please Wait...";
                SmtpMail.SmtpServer = "localhost";
                SmtpMail.Send(mail);
                lblStatus.Text = "Your enquiry has been submitted successfully and we will get back to you as soon as possible.";
                //Clear Form fields
                FirstName.Text = " ";
                LastName.Text = " ";
                AddressLine1.Text = " ";
                AddressLine2.Text = " ";
                County.Text = " ";
                Town.Text = " ";
                Postcode.Text = " ";
                Country.Text = " ";
                Mobile.Text = " ";
                Telephone.Text = " ";
                Email.Text = " ";
                Subject.Text = " ";
                Message.Text = " ";
                Required.Text = " ";
            }
            catch (Exception ex)
            {
                lblStatus.Text = "Send Email Failed." + ex.Message;
            }


            //label.Text = "Your Enquiry Has Been Submitted, We will Get Back to you sooner.";
            //Response.Write("Your Enquiry Has Been Submitted, We will Get Back to you sooner.");

        }

        protected bool ValidateForm1()
        {
            bool ErrorsFound;
            Required.Text = "* denotes required field";
            ErrorsFound = false;

            if (this.FirstName.Text == "" || this.FirstName.Text == null)
            {
                this.lblFirstName.Text = "*";
                this.lblFirstName.ForeColor = Color.Red;
                ErrorsFound = true;
            }
            else
            {
                this.lblFirstName.Text = "";
            }

            if (this.LastName.Text == "" || this.LastName.Text == null)
            {
                this.lblLastName.Text = "*";
                this.lblLastName.ForeColor = Color.Red;
                ErrorsFound = true;
            }
            else
            {
                this.lblLastName.Text = "";
            }

            if (this.AddressLine1.Text == "" || this.AddressLine1.Text == null)
            {
                this.lblAddressLine1.Text = "*";
                this.lblAddressLine1.ForeColor = Color.Red;
                ErrorsFound = true;
            }
            else
            {
                this.lblAddressLine1.Text = "";
            }

            if (this.Town.Text == "" || this.Town.Text == null)
            {
                this.lblTown.Text = "*";
                this.lblTown.ForeColor = Color.Red;
                ErrorsFound = true;
            }
            else
            {
                this.lblTown.Text = "";
            }

            if (this.County.Text == "" || this.County.Text == null)
            {
                this.lblCounty.Text = "*";
                this.lblCounty.ForeColor = Color.Red;
                ErrorsFound = true;
            }
            else
            {
                this.lblCounty.Text = "";
            }

            if (this.Postcode.Text == "" || this.Postcode.Text == null)
            {
                this.lblPostcode.Text = "*";
                this.lblPostcode.ForeColor = Color.Red;
                ErrorsFound = true;
            }
            else
            {
                this.lblPostcode.Text = "";
            }

            if (this.Country.Text == "" || this.Country.Text == null)
            {
                this.lblCountry.Text = "*";
                this.lblCountry.ForeColor = Color.Red;
                ErrorsFound = true;
            }
            else
            {
                this.lblCountry.Text = "";
            }


            if (this.Telephone.Text == "" || this.Telephone.Text == null)
            {
                this.lblTelephone.Text = "*";
                this.lblTelephone.ForeColor = Color.Red;
                ErrorsFound = true;
            }
            else
            {
                this.lblTelephone.Text = "";
            }

            if (this.Email.Text == "" || this.Email.Text == null)
            {
                this.lblEmail.Text = "*";
                this.lblEmail.ForeColor = Color.Red;
                ErrorsFound = true;
            }
            else
            {
                this.lblEmail.Text = "";
            }


            if (this.Subject.Text == "" || this.Subject.Text == null)
            {
                this.lblSubject.Text = "*";
                this.lblSubject.ForeColor = Color.Red;
                ErrorsFound = true;
            }
            else
            {
                this.lblSubject.Text = "";
            }

            if (this.Message.Text == "" || this.Message.Text == null)
            {
                this.lblMessage.Text = "*";
                this.lblMessage.ForeColor = Color.Red;
                ErrorsFound = true;
            }
            else
            {
                this.lblMessage.Text = "";
            }

            return ErrorsFound;

        }
    }
}

For a line break your can use:

Environment.NewLine

or

 "\\r\
"

Also, instead of

if (this.FirstName.Text == "" || this.FirstName.Text == null)

you can use

if (String.IsNullOrEmpty(FirstName.Text))

Edit: Another option is to send your email as HTML:

mail.IsBodyHtml = true;

and then use HTML markup for the new line “<br />”