private void Button_name_test_form_Click(object sender, EventArgs e)
 {
     if (textBox1.Text == "" || textBox1.Text == " ")
     {
         csv.writefile("?");
     }
     else
     {
         csv.writefile(textBox1.Text);
     }
     csv.writedata();
     this.Close();
     next_form = new Thread(open1);
     next_form.SetApartmentState(ApartmentState.STA);
     next_form.Start();
 }