using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; using System.Net.Mail; namespace WindowsFormsApplication1 { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void btnTemizle_Click(object sender, EventArgs e) { textBox1.Clear(); textBox2.Clear(); textBox3.Clear(); textBox4.Clear(); textBox5.Clear(); } private void btnGönder_Click(object sender, EventArgs e) { try { if (textBox1.Text != "" && textBox2.Text != "" && textBox3.Text != "" && textBox4.Text != "" && textBox5.Text != "") { MailMessage mail = new MailMessage(); SmtpClient client = new SmtpClient(); client.Credentials = new System.Net.NetworkCredential(textBox1.Text, textBox2.Text); client.Port = 587; client.Host = "smtp.gmail.com"; client.EnableSsl = true; mail.To.Add(textBox4.Text); mail.From = new MailAddress(textBox1.Text); mail.Subject = textBox5.Text; mail.Body = textBox3.Text; client.Send(mail); MessageBox.Show("Mesaj gönderildi", "Bildirim", MessageBoxButtons.OK, MessageBoxIcon.Information); } else MessageBox.Show("Lütfen Boş alanları dolduralım", "Uyarı", MessageBoxButtons.OK, MessageBoxIcon.Exclamation); } catch { MessageBox.Show("Gmail Adı veya şifre hatalı", "Uyarı", MessageBoxButtons.OK, MessageBoxIcon.Error); } } } }