Methods. Debugging and Troubleshooting - Printing triangles

using System;
//https://softuni.bg/trainings/resources/officedocument/11946/presentation-programming-fundamentals-january-2017
namespace MethodsDemo
{
    public class Methods
    {
        public static void Main()
        {

            int n = int.Parse(Console.ReadLine());
            PrintTriangle(n);
            Console.ReadLine();

        }

        public static void PrintColumns(int row)
        {
            for (int col = 1; col <= row; col++)
            {
                Console.Write($"{col} ");
            }
            Console.WriteLine();

        }
        public static void PrintTriangle(int n)
        {
            for (int row = 1; row <= n; row++)
            {
                PrintColumns(row);
            }

            for (int row = n - 1; row >= 1; row--)
            {
                PrintColumns(row);
            }
        }




    }
}