Question

a C# program, as you see , var month is defined as int, someone said without .tostring() is better, it should remove redundant call, now it is:str= "0" + Month;
but i think it’s not good .which one is better? why? thanks!(ps:my first question in stackoverflow)

string strM = string.Empty;
if ( Month < 10 )
    strM = "0" + Month.ToString ( );
    //strM = "0" + Month; which is better?

Answer 1

The best way is to use .tostring, but not as shown.

    using System;
    class example {
        static void Main(string[] args) {
            int Month =5;
            Console.WriteLine(Month.ToString("00"));
        }
    }

http://ideone.com/LCwca

Outputs: 05