this program is running but how can i make this in two class by using get set?

using System;

class Program
    static void Main()
        DateTime now = DateTime.Now;


I think you are refering to property accessors.

public class myclass
// auto implemented. i.e no backing field
public string mystring {get;set;}


// backing field and seperate get set accessors
private string _astring = string.empty;    
public string astring{
    get{ return _astring;}
    set{ _astring = value;}


vote if it helps ya... ;-)