public ClassEmployee3(ClassEmployee3 obj)
 {
     this.EmpId    = obj.EmpId;
     this.EName    = obj.EName;
     this.EAddress = obj.EAddress;
     this.EAge     = obj.EAge;
 }
        static void Main(string[] args)
        {
            ClassEmployee3 obj  = new ClassEmployee3();
            ClassEmployee3 obj1 = new ClassEmployee3(obj);

            obj.DisplayData();
            obj1.DisplayData();
            Console.Read();
        }