diff --git a/AyCode.Blazor.Components/Services/AcSignalRDataSource.cs b/AyCode.Blazor.Components/Services/AcSignalRDataSource.cs
index 3eab037..c4ada12 100644
--- a/AyCode.Blazor.Components/Services/AcSignalRDataSource.cs
+++ b/AyCode.Blazor.Components/Services/AcSignalRDataSource.cs
@@ -149,14 +149,15 @@ namespace AyCode.Blazor.Components.Services
             try
             {
                 Clear(clearChangeTracking);
+                
+                InnerList.AddRange(fromSource);
+                //foreach (var item in fromSource)
+                //{
+                //    InnerList.Add(item);
 
-                foreach (var item in fromSource)
-                {
-                    InnerList.Add(item);
-
-                    var eventArgs = new ItemChangedEventArgs<T>(item, TrackingState.GetAll);
-                    if (OnDataSourceItemChanged != null) await OnDataSourceItemChanged.Invoke(eventArgs);
-                }
+                //    var eventArgs = new ItemChangedEventArgs<T>(item, TrackingState.GetAll);
+                //    if (OnDataSourceItemChanged != null) await OnDataSourceItemChanged.Invoke(eventArgs);
+                //}
             }
             finally
             {