//What happens when the Run button is clicked
        private void Search_For_Button_Click(object sender, RoutedEventArgs e)
        {
            //Check content if it only has A,U,G,C in it
            String  s = Search_Box.Text.ToUpper();
            Boolean b = true;

            foreach (char c in s)
            {
                if (!c.Equals('A') && !c.Equals('U') && !c.Equals('G') && !c.Equals('C'))
                {
                    b = false;
                }
            }
            //
            if (b && s.Length >= minLength && s.Length <= maxLength)
            {
                //Send s to mainWindow
                mainWindow.SetSearchString(s);
                this.Close();
            }
            else if (s.Length > maxLength)
            {
                MessageBox.Show("Error, length cannot be greater than " + maxLength, "Length Error");
            }
            else if (s.Length < minLength)
            {
                MessageBox.Show("Error, length cannot be less than " + minLength, "Length Error");
            }
            else
            {
                MessageBox.Show("Error, text must contain only A, U, G, and C", "Sequence Error");
            }
        }