Mail Sending Program in win forms using C#

Mail Sending Program in win forms using C#

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace WindowsFormsApplication1

{

    public partial class Form1 : Form

    {

        MailMessage mailMessage;

        public Form1()

        {

            InitializeComponent();

        }

        private void button1_Click(object sender, EventArgs e)

        {

            try

            {

                if (textBox1.Text != null && textBox2.Text != null)

                {

                    mailMessage = new MailMessage(textBox1.Text, textBox4.Text);

                    mailMessage.Subject = textBox5.Text;

                    mailMessage.Body = textBox6.Text;

                    mailMessage.IsBodyHtml = true;

                    /* Set the SMTP server and send the email  */

                    SmtpClient smtpClient = new SmtpClient();

                    

                    smtpClient.Host = "smtp.gmail.com";

                    

                    smtpClient.Port = 587;

                    smtpClient.UseDefaultCredentials = true;

                    

                    smtpClient.Credentials = new NetworkCredential(textBox1.Text, textBox2.Text);

                    //this will be the true in case of gamil and it varies from the service provider

                    smtpClient.EnableSsl = true;

                    smtpClient.Send(mailMessage);

                }

               

                string msg="Message Send Successfully:";

                msg+="\n To :"+ textBox4.Text;

 

                MessageBox.Show(msg.ToString());

                /* clear the controls */

                textBox1.Text = string.Empty;

                textBox2.Text = string.Empty;

                textBox3.Text = string.Empty;

                textBox4.Text = string.Empty;

                textBox5.Text = string.Empty;

                textBox6.Text = string.Empty;

            }

            catch (Exception ex)

            {

                MessageBox.Show(ex.Message.ToString());

            }

        }

        private void button2_Click(object sender, EventArgs e)

        {

            Application.Exit();

        }

    }

}