diff --git a/AyCode.Core/Enums/DataChangeMode.cs b/AyCode.Core/Enums/TrackingState.cs
similarity index 55%
rename from AyCode.Core/Enums/DataChangeMode.cs
rename to AyCode.Core/Enums/TrackingState.cs
index 7e7a459..0060f8e 100644
--- a/AyCode.Core/Enums/DataChangeMode.cs
+++ b/AyCode.Core/Enums/TrackingState.cs
@@ -6,10 +6,12 @@ using System.Threading.Tasks;
 
 namespace AyCode.Core.Enums
 {
-    public enum DataChangeMode
+    public enum TrackingState : byte
     {
-        Add = 1,
-        Update = 2,
-        Remove = 3,
+        None = 0,
+        Get = 1,
+        Add = 2,
+        Update = 3,
+        Remove = 4,
     }
 }
diff --git a/AyCode.Core/Extensions/CollectionExtensions.cs b/AyCode.Core/Extensions/CollectionExtensions.cs
index 731f955..b48fb2b 100644
--- a/AyCode.Core/Extensions/CollectionExtensions.cs
+++ b/AyCode.Core/Extensions/CollectionExtensions.cs
@@ -6,7 +6,7 @@ namespace AyCode.Core.Extensions
 {
     public static class CollectionExtensions
     {
-        public static DataChangeMode UpdateCollection<TDataItem>(this IList<TDataItem> source, TDataItem dataItem, bool isRemove) where TDataItem : IId<Guid>
+        public static TrackingState UpdateCollection<TDataItem>(this IList<TDataItem> source, TDataItem dataItem, bool isRemove) where TDataItem : IId<Guid>
         {
             if (dataItem.Id.IsNullOrEmpty()) throw new ArgumentNullException(nameof(dataItem), "UpdateCollection->dataItem.Id.IsNullOrEmpty()");
 
@@ -16,17 +16,17 @@ namespace AyCode.Core.Extensions
             {
                 if (transferIndex > -1) source.RemoveAt(transferIndex);
 
-                return DataChangeMode.Remove;
+                return TrackingState.Remove;
             }
 
             if (transferIndex > -1)
             {
                 source[transferIndex] = dataItem;
-                return DataChangeMode.Update;
+                return TrackingState.Update;
             }
 
             source.Add(dataItem);
-            return DataChangeMode.Add;
+            return TrackingState.Add;
         }
 
         public static int FindIndex<T>(this IList<T> list, Predicate<T> predicate)
diff --git a/AyCode.Services/SignalRs/SignalRCrudTags.cs b/AyCode.Services/SignalRs/SignalRCrudTags.cs
index 83466f5..7633e7a 100644
--- a/AyCode.Services/SignalRs/SignalRCrudTags.cs
+++ b/AyCode.Services/SignalRs/SignalRCrudTags.cs
@@ -1,4 +1,6 @@
-namespace AyCode.Services.SignalRs;
+using AyCode.Core.Enums;
+
+namespace AyCode.Services.SignalRs;
 
 public sealed class SignalRCrudTags(int getAllTag, int getItemTag, int addTag, int updateTag, int removeTag)
 {
@@ -8,4 +10,16 @@ public sealed class SignalRCrudTags(int getAllTag, int getItemTag, int addTag, i
     public int UpdateMessageTag { get; } = updateTag;
     public int RemoveMessageTag { get; } = removeTag;
 
+    public int GetMessageTagByTrackingState(TrackingState trackingState)
+    {
+        return trackingState switch
+        {
+            TrackingState.None => 0,
+            TrackingState.Get => GetItemMessageTag,
+            TrackingState.Add => AddMessageTag,
+            TrackingState.Update => UpdateMessageTag,
+            TrackingState.Remove => RemoveMessageTag,
+            _ => throw new ArgumentOutOfRangeException()
+        };
+    }
 }
\ No newline at end of file