From a724fce2f687b9d23a6180251326997905d3ecd1 Mon Sep 17 00:00:00 2001
From: Loretta <jozsef.b@aycode.com>
Date: Fri, 21 Nov 2025 07:20:35 +0100
Subject: [PATCH] improvements

---
 ...ableCollection.cs => AcObservableCollection.cs} | 14 +++++++++++---
 .../SignalRs/AcSignalRDataSource.cs                |  6 +++---
 2 files changed, 14 insertions(+), 6 deletions(-)
 rename AyCode.Core/Helpers/{AcFastObservableCollection.cs => AcObservableCollection.cs} (90%)

diff --git a/AyCode.Core/Helpers/AcFastObservableCollection.cs b/AyCode.Core/Helpers/AcObservableCollection.cs
similarity index 90%
rename from AyCode.Core/Helpers/AcFastObservableCollection.cs
rename to AyCode.Core/Helpers/AcObservableCollection.cs
index 0d5be2c..eea1e1f 100644
--- a/AyCode.Core/Helpers/AcFastObservableCollection.cs
+++ b/AyCode.Core/Helpers/AcObservableCollection.cs
@@ -5,7 +5,7 @@ using System.ComponentModel;
 
 namespace AyCode.Core.Helpers
 {
-    public interface IAcFastObservableCollection
+    public interface IAcObservableCollection
     {
         public void AddRange(IEnumerable other);
         public void Replace(IEnumerable other);
@@ -13,17 +13,25 @@ namespace AyCode.Core.Helpers
         public void Synchronize(NotifyCollectionChangedEventArgs args);
     }
 
-    public interface IAcFastObservableCollection<T> : IAcFastObservableCollection
+    public interface IAcObservableCollection<T> : IAcObservableCollection
     {
         public void Replace(IEnumerable<T> other);
         public void Sort(IComparer<T> comparer);
         public void SortAndReplace(IEnumerable<T> other, IComparer<T> comparer);
     }
 
-    public class AcFastObservableCollection<T> : ObservableCollection<T>, IAcFastObservableCollection<T>
+    public class AcObservableCollection<T> : ObservableCollection<T>, IAcObservableCollection<T>
     {
         private bool _suppressChangedEvent;
 
+        public AcObservableCollection() : base()
+        { }
+        public AcObservableCollection(List<T> list) : base(list)
+        { }
+
+        public AcObservableCollection(IEnumerable<T> collection) : base(collection)
+        { }
+
         public void Replace(IEnumerable<T> other)
         {
             _suppressChangedEvent = true;
diff --git a/AyCode.Services.Server/SignalRs/AcSignalRDataSource.cs b/AyCode.Services.Server/SignalRs/AcSignalRDataSource.cs
index 255cc9e..f170d8d 100644
--- a/AyCode.Services.Server/SignalRs/AcSignalRDataSource.cs
+++ b/AyCode.Services.Server/SignalRs/AcSignalRDataSource.cs
@@ -204,9 +204,9 @@ namespace AyCode.Services.Server.SignalRs
 
         public bool HasWorkingReferenceList { get; private set; }
 
-        public void SetWorkingReferenceList(TIList workingIList)
+        public void SetWorkingReferenceList(TIList? workingIList)
         {
-            if (workingIList == null!) return; //throw new ArgumentNullException(nameof(workingList));
+            if (workingIList == null) return; //throw new ArgumentNullException(nameof(workingList));
 
             Monitor.Enter(_syncRoot);
 
@@ -267,7 +267,7 @@ namespace AyCode.Services.Server.SignalRs
         {
             switch (destination)
             {
-                case IAcFastObservableCollection dest:
+                case IAcObservableCollection dest:
                     dest.AddRange(source);
                     break;
                 case List<TDataItem> dest: