DataAnnotations & Model in .Net Core
DataAnnotations is in System.ComponentModel.DataAnnotations. 1.using System.ComponentModel. DataAnnotations ; 1.1 [ Required ] 1.2 [ RegularExpression (@"^\d+$", ErrorMessage = "Only number")] public long Id { get; set; } 1.3[ Display (Name = "Color head")] public string displayOtherName { get; set; } 1.4[ Key ] [Table("view_name")] public class EFReservation { [ Key ] public long keyId { get; set; } } 2.using System.ComponentModel. DataAnnotations. Schema ; 2.1 [ Table ("TableName")] public class EFBrandConfig{...} 2.2[ NotMapped ] public string notMapped { get; set; } 2.3[ Column ("my_id")] public string MyID { get; set; } 2.4 [ Column(TypeName = "datetime")] [Required] [Display(Name = "Start DateTime")] [Column(TypeName = "datetime")] public DateTim...