Data annotation

Hi,


 In your models folder in MVC you create models. Now if you need to place validations on it you need to import the "using System.ComponentModel.DataAnnotations;" namespace.


  Further for your properties you can use it like:

      [Required(ErrorMessage="Please Enter ID")]       
      public int Id { get; set; }


        [StringLength(15,MinimumLength=4)]
        [Required(ErrorMessage = "Please Enter Name")]
        public string Name { get; set; }


        [Required(ErrorMessage = "Please Enter Price")]
        public double Price { get; set; }


Follow the below links for detailed analysis:

MVC 4 Validation 1

MVC 4 Validation 2