Need help in creating the field "Customer Code" and "Product Code".

I am writing an online store application in Visual Studio (MVC). I use the approach of Code-first. I am new to this business and I understand everything.

For my project, these 2 fields are needed. The format of the field "Customer Code" is “XXXX-YYYY” where X is a number, YYYY is the year in which the customer is registered.
The field "Product Code" is the format “XX-XXXX-YYXX” where X is a number, Y is an uppercase letter of the English alphabet.

I read about getters and setters on MSDN, but I didn’t find anything similar. Tell me how to make them better example.

transferred from “answer” :

The entities Order and Item are already described, as well as others.
Customer code.

[Bind(Exclude = "OrderID")] public partial class Order { [ScaffoldColumn(false)] public int OrderID { get; set; } public string Code { get; set; } [DisplayName("Дата заказа")] [ScaffoldColumn(false)] public System.DateTime OrderDate { get; set; } [DisplayName("Дата доставки")] [ScaffoldColumn(false)] public System.DateTime OrderDateShiping { get; set; } [DisplayName("Имя пользователя")] [ScaffoldColumn(false)] public string UserName { get; set; } [Required(ErrorMessage = "Введите Ваше имя")] [DisplayName("Имя")] [StringLength(160)] public string FirstName { get; set; } [Required(ErrorMessage = "Введите Вашу фамилию")] [DisplayName("Фамилия")] [StringLength(160)] public string LastName { get; set; } [DisplayName("Адресс")] [Required(ErrorMessage = "Введите Ваш адресс")] [StringLength(70)] public string Address { get; set; } [DisplayName("Город")] [Required(ErrorMessage = "Введите Ваш город")] [StringLength(40)] public string City { get; set; } [DisplayName("Область")] [Required(ErrorMessage = "Введите область")] [StringLength(40)] public string State { get; set; } [Required(ErrorMessage = "Введите индекс")] [DisplayName("Индекс")] [StringLength(10)] public string PostalCode { get; set; } [DisplayName("Страна")] [Required(ErrorMessage = "Введите страну")] [StringLength(40)] public string Country { get; set; } [DisplayName("Номер телефона")] [Required(ErrorMessage = "Введите Ваш номер телефона")] [StringLength(24)] public string Phone { get; set; } [Required(ErrorMessage = "Введите Ваш Emal")] [DisplayName("Email")] [RegularExpression(@"[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\.[A-Za-z]{2,4}", ErrorMessage = "Поле Email введено не корректно.")] [DataType(DataType.EmailAddress)] public string Email { get; set; } [DisplayName("Сумма")] [ScaffoldColumn(false)] public decimal Total { get; set; } public ICollection<OrderDetail> OrderDetails { get; set; } public User User { get; set; }

Product code.

 [Bind(Exclude = "ItemID")] public partial class Item { [ScaffoldColumn(false)] public int ItemID { get; set; } [DisplayName("Наименование")] [Required(ErrorMessage = "Введите наименование")] [StringLength(160)] public string Title { get; set; } public string Code { get; set; } [DisplayName("Бренд")] public int BrandID { get; set; } [DisplayName("Категория")] public int CategoryID { get; set; } [DisplayName("Стоимость")] [Required(ErrorMessage = "Введите стомость")] [Range(0.01, 100.00, ErrorMessage = "Цена должна быть от 0.01 до 100.00")] public decimal Price { get; set; } [DisplayName("Логотип")] [StringLength(1024)] public string ItemArtUrl { get; set; } public virtual Category Category { get; set; } public virtual Brand Brand { get; set; } public virtual ICollection<OrderDetail> OrderDetails { get; set; }

StoreEntities code

 public DbSet<Item> Items { get; set; } public DbSet<Category> Categorys { get; set; } public DbSet<Brand> Brands { get; set; } public DbSet<Cart> Carts { get; set; } public DbSet<Order> Orders { get; set; } public DbSet<OrderDetail> OrderDetails { get; set; }

All operations are also implemented. My problem is that you need to add the Code field, but I do not understand how to make it in this format. So I ask for help with this field, suggest how to do it, or if it is possible to give a similar example.

  • one
    I sincerely believe that you should first familiarize yourself with programming as such. Next - with the development methodology. Then with the technology you want to use. Skip - fail. After that, it will become obvious to you that in order to have these two flat fields , you need to at least describe the entities "customer" and "product", in each of which you define other relevant fields. In a similar way, the question is useless and does not have an answer, in particular, because it should be read like this: "Implement my task without knowing its definition . " - Anton Papin

1 answer 1

  1. Create a model
  2. Create model properties
  3. Hang attributes on model properties
  4. In the controller, transfer the model to View ()
  5. In the View itself, output the elements of the model, formatting for input is done by JS