using System;

using System.Text;

public class Program

{

    public static void Main()

    {

        int size = 5;

        PrintGlass(size);

    }

    public static void PrintGlass(int size) {

        //prints the glass part

        for (int i = size; i > 0; i--) {

            int zeroCount = i * 2 - 1;

            Console.WriteLine(GetFillString('0', zeroCount, ' ', size - i));

        }

        //prints the middle part

        string middle = GetFillString('|', 1,  ' ', size - 1);

        for (int i = 0; i < size; i++) {

            Console.WriteLine(middle);

        }

        //prints the bottom

        Console.WriteLine(GetFillString('=', size * 2 - 1, ' ', 0));

    }

    public static string GetFillString(char fillChar, int fillCount, char paddingChar, int paddingCount) {

        StringBuilder bldr = new StringBuilder();

        int fillEnd = paddingCount + fillCount;

        for(int i = 0; i < fillCount + paddingCount; i++) {

            char c = i < paddingCount || i >= fillEnd ? paddingChar : fillChar;

            bldr.Append(c);

        }

        return bldr.ToString();

    }

}

​