Wann wirst du 1.000€ besitzen?

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


namespace WindowsFormsApplication1
{
	public partial class Form1 : Form
	{
    	public Form1()
    	{
        	InitializeComponent();
    	}


    	private void label1_Click(object sender, EventArgs e)
    	{


    	}


    	private void label2_Click(object sender, EventArgs e)
    	{


    	}


    	private void button1_Click(object sender, EventArgs e)
    	{
        	int gewinn = Convert.ToInt16(textBox1.Text) - Convert.ToInt16(textBox2.Text);
        	int monate = 0;
        	int kontostand = 0;


        	while (kontostand < 10000)
        	{
            	monate = monate + 1;
            	kontostand = kontostand + gewinn;


            	label1.Text = "1000€ besitzt du in:" + Environment.NewLine + monate / 12 + "Jahren" + Environment.NewLine + monate + "Monaten";
        	}


    	}
	}
}