sing System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Net.Mail;
using System.Net;

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

    }
    protected void EmailButton_Click(object sender, EventArgs e)
    {
        string txtFrom = "gard9070@gmail.com";
        string txtTo = "PartyHardStreetTeam@gmail.com";
        string txtSubject = NameTextBox.Text + " Quote Request";
        string txtBody = "Name: " + NameTextBox.Text +
                         "/nPhone Number: " + PhoneTextBox.Text +
                         "/nEvent Type: " + EventRadioButtonList.SelectedValue.ToString() +
                         "/nDate of Event: " + Calendar1.SelectedDate.ToShortDateString() +
                         "/nDJ Required: " + DJRadioButtonList.SelectedValue.ToString() +
                         "/nLiquor Required: " + LiquorRadioButtonList.SelectedValue.ToString() +
                         "/nLiquor Package: " + PackagesRadioButtonList.SelectedValue.ToString() +
                         "/nSongs Required: " + SongTextBox.Text;
        MailMessage mailObj = new MailMessage();
        var client = new SmtpClient("smtp.gmail.com, 465")
            {
                Credentials = new NetworkCredential("Gard9070@gmail.com", "*****"),//*** is password
                EnableSsl = true
            };
        client.Send(txtFrom, txtTo, txtSubject, txtBody);