Huge work

KTUSAPS/Extensions/EntityEntryExtensions.cs

@@ -0,0 +1,44 @@
+using Microsoft.EntityFrameworkCore.ChangeTracking;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace KTUSAPS.Extensions
+{
+    public static class EntityEntryExtensions
+    {
+        public static void MovePropertyDataBlackList(this EntityEntry target, object source, IEnumerable<string> blacklistedProprties)
+        {
+            MovePropertyData(target, source, (prop) => blacklistedProprties.Contains(prop.Metadata.Name));
+        }
+
+        public static void MovePropertyDataWhiteList(this EntityEntry target, object source, IEnumerable<string> whitelistedProprties)
+        {
+            MovePropertyData(target, source, (prop) => !whitelistedProprties.Contains(prop.Metadata.Name));
+        }
+
+        public static void MovePropertyData(this EntityEntry target, object source, Func<PropertyEntry, bool> isBlacklisted)
+        {
+            foreach (var prop in target.Properties)
+            {
+                if (isBlacklisted(prop))
+                    continue;
+
+                var propertyInfo = prop.Metadata.PropertyInfo;
+                var newValue = propertyInfo.GetValue(source);
+                if (!newValue.isDefault()) {
+                    prop.CurrentValue = newValue;
+                }
+            }
+        }
+
+        private static bool isDefault(this object value)
+        {
+            if(value == default)
+                return true;
+            if (value is int || value is long)
+                return (int)value == default(int);
+            return false;
+        }
+    }
+}