Envio Correo

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data;
using System.Text;
using System.Configuration;
using System.Net.Mail;
using System.Net;
using MySql.Data.MySqlClient;
//using SimpleCrypto;


namespace SoftwareChampions_Col.Vista
{
    public partial class recuperarcontraseña : System.Web.UI.Page
    {
        MySqlConnection con = new MySqlConnection(@"Data Source=localhost; Database=championscol; User ID=root; Password=123456789");

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                Label1.Text = DateTime.Now.ToString("yyyy-MM-dd hh:mm:ss");

            }

            Button2.Visible = false;
            Button3.Visible = false;
            Label1.Visible = false;
            Label2.Visible = false;
            TextBox2.Visible = false;


        }
        protected void ValidacionEmail()
        {
            string Correo = TextBox1.Text.Trim();
            if (Correo == "")
            {
                Label2.Visible = true;
                Label2.Text = "* Por favor debe de llenar el campo";
            }
            else
            {
                    con.Open();
                    MySqlCommand cmd = con.CreateCommand();
                    cmd.CommandType = CommandType.Text;
                    cmd.CommandText = "select * from accounts where Email='" + TextBox1.Text + "'";
                    cmd.ExecuteNonQuery();
                    DataTable dt = new DataTable();
                    MySqlDataAdapter da = new MySqlDataAdapter(cmd);
                    da.Fill(dt);
                    foreach (DataRow dr in dt.Rows)
                    {

                        if (dt.Rows.Count > 0)
                        {
                        Page.ClientScript.RegisterStartupScript(this.GetType(), "Scripts", "<script>alert('Hemos enviado un codigo de recuperacion a su correo');</script>");
                        //cmd.CommandText = "insert into accounts(CodigoVerficacion) values (?CodigoVerficacion)";
                        EnviarCorreo(Correo);
                        Response.Redirect("codigoverificacion.aspx");
                    }
                }
                con.Close();
                Page.ClientScript.RegisterStartupScript(this.GetType(), "Scripts", "<script>alert('Correo incorrecto');</script>");

            }

        }
        public string GeneradorDeCodigos(int longitud)
        {
            string caracteres = "12J45K789T";
            StringBuilder res = new StringBuilder();
            Random rnd = new Random();
            while (0 < longitud--)
            {
                res.Append(caracteres[rnd.Next(caracteres.Length)]);
            }
            return res.ToString();
        }

        protected void Button1_Click(object sender, EventArgs e)
        {
            ValidacionEmail();

        }


        public void EnviarCorreo(string Destino)
        {
            string correo = TextBox1.Text;
            string password = GeneradorDeCodigos(10);
            string correoAdmin = ConfigurationManager.AppSettings["CorreoElectronico"].ToString();
            string ContraAdmin = ConfigurationManager.AppSettings["ContraseñaCorreo"].ToString();

            string Asunto = "Recuperar contraseña Champions_Col[Servidor Privado]";
            string Body = "su codigo de verificacion es " + password + " recuerde cambiar la contraseña por una facil de recordar.";

            var smtp = new SmtpClient();
            {
                smtp.Host = "smtp-mail.outlook.com";
                smtp.Port = 587;
                smtp.EnableSsl = true;
                smtp.DeliveryMethod = SmtpDeliveryMethod.Network;
                smtp.Credentials = new NetworkCredential(correoAdmin, ContraAdmin);
                smtp.Timeout = 10000;
            }
            try
            {
                smtp.Send(correoAdmin, Destino, Asunto, Body);
                VaciarCampo();
            }
            catch (Exception)
            {
                Response.Write("No se puedo enviar el email");
            }

        }
        void VaciarCampo()
        {
            TextBox1.Text = "";
        }
    }
}