public class ClassOne
    {
        public int id { get; set; }
        public string Name { get; set; }
        public double Price { get; set; }
    }
    public class ClassTwo
    {
        public int id { get; set; }
        public string Name { get; set; }
        public int Price { get; set; }
    }

var config = new MapperConfiguration(cfg => {
                cfg.CreateMap<ClassOne, ClassTwo>();
});

IMapper iMapper = config.CreateMapper();
var source = new ClassOne() {id = 1, Name = "Joydip", Price = 1000.87872};
var destination = new ClassTwo() {id = 7, Name = "lalafa", Price = 9876};
destination = iMapper.Map<ClassOne, ClassTwo>(source);