private void button1_Click(object sender, EventArgs e)
        {
            SqlConnection  con = new SqlConnection(@"Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=C:\Users\erol\source\repos\elmalar\elmalar\elmalar.mdf;Integrated Security=True;Connect Timeout=30");
            SqlDataAdapter sda = new SqlDataAdapter("Select Count (*) From [Table] where k_adi='" + textBox1.Text + "'and sifre='" + maskedTextBox1.Text + "'", con);
            DataTable      dt  = new DataTable();

            sda.Fill(dt);
            if (dt.Rows[0][0].ToString() == "1")
            {
                this.Hide();
                arayuz arayuz1 = new arayuz();
                arayuz1.Show();
            }
            else
            {
                MessageBox.Show("Lütfen Kullanıcı Adı ve Şifrenizi Kontrol Edin.");
            }
        }
 public arduinoController(arayuz View)
 {
     this.View = View;
 }