Triangle using For Loop in C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication
{
    class Program
    {
        static void Main(string[] args)
        {
            int a, b;
            for (a = 0; a <= 5; a++)
            { //when this loop looping 1 time, and 'a' value is 1 the, another loop
                for (b = 0; b <= a; b++) //looping 1 time and printing * and going
                { //to new line and the first loop looping 2 time the 'a' value is
                    Console.Write("*"); //2 the second loop looping 2 time and
                } //printing ** and so on, second loop looping from 0 to 'a' value.
                Console.WriteLine(); //this line used for new line.
            }
            Console.ReadKey();
        }
    }
}