how can i make a short codding of calendar using try catch?

[laxman saud]

using System;
using System.Collections.Generic;
using System.Text;
using System.Text.RegularExpressions;
namespace ConsoleApp10
{
    class Program
    {
 
        static void Main(string[] args)
        {
            int year = 0;
            int month = 0;
            DateTime targetMonth = DateTime.Now;
            int[,] calendar = new int[6, 7];
 
            try
            {
 
                year = int.Parse(args[0]);
                month = int.Parse(args[1]);
                targetMonth = new DateTime(year, month, 1);
 
 
            }
            catch
            {
                Console.WriteLine("引数が不正です。");
                return;
            }
 
            Console.WriteLine("該当月のカレンダーを出力します");
            Console.WriteLine(string.Format("{0:yyyy年MM月}", targetMonth));
            Console.WriteLine("日 月 火 水 木 金 土");
            int days = DateTime.DaysInMonth(year, month);
            int currentDay = 1;
 
            for (int i = 0; i < calendar.GetLength(0); i++)
            {
                for (int j = 0; j < calendar.GetLength(1) && currentDay <= days; j++)
                {
                    if (i == 0 && month > j)
                    {
                        calendar[i, j] = 0;
                    }
                    else
                    {
                        calendar[i, j] = currentDay;
                        currentDay++;
                    }
                }
            }
 
 
            for (int i = 0; i < calendar.GetLength(0); i++)
            {
                for (int j = 0; j < calendar.GetLength(1); j++)
                {
                    if (calendar[i, j] > 0)
                    {
                        if (calendar[i, j] < 10)
                        {
                            Console.Write(" " + calendar[i, j] + " ");
                        }
                        else
                        {
                            Console.Write(calendar[i, j] + " ");
                        }
                    }
                    else
                    {
                        Console.Write("   ");
                    }
                }
                Console.WriteLine("");
            }
 
 
        }
    }
}