добавила Id в месседж

SushiBarContracts/BindingModel/MessageInfoBindingModel.cs

@@ -3,6 +3,7 @@ namespace SushiBarContracts.BindingModel
 {
     public class MessageInfoBindingModel : IMessageInfoModel
     {
+        public int Id { get; set; }
         public string MessageId { get; set; } = string.Empty;
 
         public int? ClientId { get; set; }

SushiBarContracts/ViewModels/MessageInfoViewModel.cs

@@ -1,17 +1,13 @@
 using SushiBarContracts.Attributes;
 using SushiBarDataModels;
-using System;
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.ComponentModel.DataAnnotations;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
 
 namespace SushiBarContracts.ViewModels
 {
     public class MessageInfoViewModel : IMessageInfoModel
     {
+        [Column(visible: false)]
+        public int Id { get; set; }
+
         [Column(visible: false)]
         public string MessageId { get; set; } = string.Empty;
 

SushiBarDataModels/IMessageInfoModel.cs

@@ -6,7 +6,7 @@ using System.Threading.Tasks;
 
 namespace SushiBarDataModels
 {
-    public interface IMessageInfoModel
+    public interface IMessageInfoModel : IId
     {
         string MessageId { get; }
         int? ClientId { get; }

SushiBarDatabaseImplement/Models/MessageInfo.cs

@@ -2,6 +2,7 @@
 using SushiBarContracts.ViewModels;
 using SushiBarDataModels;
 using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
 using System.Runtime.Serialization;
 
 namespace SushiBarDatabaseImplement.Models
@@ -9,6 +10,9 @@ namespace SushiBarDatabaseImplement.Models
     [DataContract]
     public class MessageInfo : IMessageInfoModel
     {
+        [NotMapped]
+        public int Id { get; set; }
+
         [DataMember]
         [Key]
         public string MessageId { get; set; } = string.Empty;

SushiBarFileImplement/Models/MessageInfo.cs

@@ -9,6 +9,8 @@ namespace SushiBarFileImplement.Models
     [DataContract]
     public class MessageInfo : IMessageInfoModel
     {
+        [DataMember]
+        public int Id { get; set; }
         [DataMember]
         public string MessageId { get; set; } = string.Empty;
 

SushiBarListImplements/Models/MessageInfo.cs

@@ -6,6 +6,7 @@ namespace SushiBarListImplements.Models
 {
     public class MessageInfo : IMessageInfoModel
     {
+        public int Id { get; set; }
         public string MessageId { get; set; } = string.Empty;
 
         public int? ClientId { get; set; }