...

Back/Data/Models/InvoiceItem.cs

@@ -4,7 +4,7 @@ using System.Reflection.Metadata.Ecma335;
 
 namespace  Back.Data.Models
 {
-    public class InvoiceItem
+    public class InvoiceItem : ICloneable
     {
         #region Key
         public int ID { get; set; }
@@ -147,6 +147,11 @@ namespace  Back.Data.Models
 
         [ForeignKey("CODID")]
         public virtual CODItem cODItem { get; set; }
+
+        public object Clone()
+        {
+            return this.MemberwiseClone();
+        }
         #endregion
 
     }