INKSec

private void button1_Click(object sender, EventArgs e)
        {
            int loopStart;
            int loopEnd;
            //Weise die Werte aus dem Display zu
            loopStart = int.Parse(Display1.Text);
            loopEnd = int.Parse(Display2.Text);
            int answer = 0;
            for (int i = loopStart; i < loopEnd; i++)
            {