decimal to string comma.

decimaltostring.cs

            decimal t1 = 123456.12345M;
            decimal t2 = 123456.12345M;
            decimal t3 = 12345678901234.123456789M;

            Console.WriteLine(t1.ToString("#,###,###.###"));
            //123,456.123
            

            Console.WriteLine(t2.ToString("#,###,###.####"));
            //123,456.1235
            
            Console.WriteLine(t3.ToString());
            //12345678901234.123456789

            Console.WriteLine(GetMoneyString(t3));
            //12,345,678,901,234.123456789
            
            Console.ReadLine();