For loop skips straight to the end

I started studying C# and I encountered a problem with one of my assignments. The assignment is to create a pyramid made of stars. The height is designated by user input.

For some reason my first for loop skips to the end. While debugging, I noticed that the variable height receives bar's value, but after that it skips to the end. I have no clue why, as the code seems fine to me.

The do-while loop is there to ask the user for a new value, in case the value entered is 0 or lower.

using System;

namespace Viope
{
    class Vioppe
    {
        static void Main()
        {
            int bar; 

            do
            {
                Console.Write("Anna korkeus: ");
                string foo = Console.ReadLine();
                bar = int.Parse(foo);
            }
            while (bar <= 0);

            for (int height = bar; height == 0; height--)
            {
                for (int spaces = height; spaces == height - 1; spaces--)
                {
                    Console.Write(" ");
                }
                for (int stars = 1; stars >= height; stars = stars * 2 - 1)
                {
                    Console.Write("*");
                }
                Console.WriteLine();
            }
        }
    }
}