private void button2_Click(object sender, EventArgs e) { int number_of_videos = 0; if (Int32.TryParse(textBox1.Text, out number_of_videos)) { if (number_of_videos > 18 || number_of_videos < 1) { ErrorForm error_form = new ErrorForm("'Number of videos' must be between 1 and 18"); error_form.ShowDialog(); return; } } else { ErrorForm error_form = new ErrorForm("'Number of videos' must be a number"); error_form.ShowDialog(); return; } run_shell_script(); connect_with_python(number_of_videos); modify_current_frame(); FinalWindow settingsForm = new FinalWindow(); this.Hide(); settingsForm.ShowDialog(); this.Close(); }