for_vika/praktika_2/material_value.cs

namespace praktika_2
{
    using System;
    using System.Collections.Generic;
    using System.ComponentModel.DataAnnotations;
    using System.ComponentModel.DataAnnotations.Schema;
    using System.Data.Entity.Spatial;

    public partial class material_value
    {
        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
        public material_value()
        {
            ind_characteristic = new HashSet<ind_characteristic>();
            material_value_accounting = new HashSet<material_value_accounting>();
            material_value_pod_pechat = new HashSet<material_value_pod_pechat>();
        }

        [DatabaseGenerated(DatabaseGeneratedOption.None)]
        public int id { get; set; }

        [Required]
        [StringLength(50)]
        public string mat_value { get; set; }

        public int? id_category { get; set; }

        [Required]
        [StringLength(20)]
        public string unit_of_meas { get; set; }

        public int? count { get; set; }

        [StringLength(50)]
        public string number_document { get; set; }

        public string Invent_number { get; set; }

        public string info { get; set; }

        public int? ID_org { get; set; }

        public virtual category category { get; set; }

        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
        public virtual ICollection<ind_characteristic> ind_characteristic { get; set; }

        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
        public virtual ICollection<material_value_accounting> material_value_accounting { get; set; }

        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
        public virtual ICollection<material_value_pod_pechat> material_value_pod_pechat { get; set; }
    }
}