diff --git a/AyCode.Blazor.Components/Services/AcSignalRDataSource.cs b/AyCode.Blazor.Components/Services/AcSignalRDataSource.cs
index c4ada12..34125da 100644
--- a/AyCode.Blazor.Components/Services/AcSignalRDataSource.cs
+++ b/AyCode.Blazor.Components/Services/AcSignalRDataSource.cs
@@ -93,7 +93,7 @@ namespace AyCode.Blazor.Components.Services
     {
         private readonly object _syncRoot = new();
 
-        protected readonly List<T> InnerList = []; //TODO: Dictionary??? - J.
+        protected List<T> InnerList = []; //TODO: Dictionary??? - J.
         protected readonly ChangeTracking<T> TrackingItems = new();
 
         protected readonly Guid[]? ContextIds;
@@ -149,8 +149,10 @@ namespace AyCode.Blazor.Components.Services
             try
             {
                 Clear(clearChangeTracking);
-                
-                InnerList.AddRange(fromSource);
+
+                if (fromSource is List<T> fromSourceCasted) InnerList = fromSourceCasted;
+                else InnerList.AddRange(fromSource);
+
                 //foreach (var item in fromSource)
                 //{
                 //    InnerList.Add(item);