Iterativt vs Rekursivt

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace WindowsFormsApp35
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btnKnap_Click(object sender, EventArgs e)
        {
            //lblOutput.Text = IterativMetode(int.Parse(txtInput.Text)).ToString();
            lblOutput.Text = RekursivMetode(int.Parse(txtInput.Text)).ToString();
        }

        private int IterativMetode(int tal)
        {
            int resultat = 1;

            for (int i = 1; i <=tal; i++)
            {
                resultat = resultat * i;
            }

            return resultat;
        }

        private int RekursivMetode(int tal)
        {
            if (tal > 1)
            {
                return tal * RekursivMetode(tal - 1);
            }

            else
            {
                return 1;
            }
        }
    }
}