...

Back/Data/Models/Invoice.cs

@@ -5,7 +5,7 @@ using Back.Common;
 using Shared.DTOs;
 namespace Back.Data.Models
 {
-    public class Invoice
+    public class Invoice : ICloneable
     {
         #region Key
         public int ID { get; set; }
@@ -178,6 +178,12 @@ namespace Back.Data.Models
         [ForeignKey("CompanyID")]
         [JsonIgnore]
         public virtual Company? company { get; set; }
+
+        public object Clone()
+        {
+            return this.MemberwiseClone();
+
+        }
         #endregion
     }