private void btn_login_Click(object sender, EventArgs e)
 {
     try
     {
         var data = new WebClient()
         {
             Encoding = Encoding.UTF8
         }.DownloadString("http://localhost:55394/Login/Default/Login/" + tb_username.Text.ToString() + "," + tb_password.Text.ToString() + "");
         if (data == "")
         {
             MessageBox.Show("Kullanıcı Adınız veya Şifreniz Hatalı! Lütfen Kontrol Edip Tekrar Deneyiniz.");
         }
         else
         {
             person.TeacherID = data;
             Form_Main main = new Form_Main();
             main.Show();
             Hide();
         }
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.Message.ToString());
     }
 }
Exemple #2
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 private void Form1_FormClosed(object sender, FormClosedEventArgs e)
 {
     try
     {
         if (serialPort1.IsOpen == true)
         {
             serialPort1.Close();
         }
         Form_Main m = new Form_Main();
         m.Show();
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.Message.ToString());
     }
 }