diff --git a/WarehouseMgr/Tnb.WarehouseMgr/BaseWareHouseService.cs b/WarehouseMgr/Tnb.WarehouseMgr/BaseWareHouseService.cs
index 48105be6..73368235 100644
--- a/WarehouseMgr/Tnb.WarehouseMgr/BaseWareHouseService.cs
+++ b/WarehouseMgr/Tnb.WarehouseMgr/BaseWareHouseService.cs
@@ -54,7 +54,7 @@ namespace Tnb.WarehouseMgr
         private static Dictionary<string, IWHStorageService> _storeMap = new(StringComparer.OrdinalIgnoreCase);
         public OverideVisualDevFunc OverideFuncs { get; } = new OverideVisualDevFunc();
         private readonly ChannelWriter<NotifyMessage> _channelWriter;
-        
+
 
 
         public BaseWareHouseService(ChannelWriter<NotifyMessage>? channelWriter = default)
@@ -64,17 +64,23 @@ namespace Tnb.WarehouseMgr
 
         static BaseWareHouseService()
         {
-            var serviceTypes = App.EffectiveTypes.Where(u => u.IsClass && !u.IsInterface && !u.IsAbstract && typeof(IWHStorageService).IsAssignableFrom(u)).ToList();
-            foreach (var serviceType in serviceTypes)
+            _stroageMapLazy = new Lazy<Dictionary<string, IWHStorageService>>(() =>
             {
-                var callerName = serviceType.GetCustomAttribute<CallerAttribute>()?.Name ?? string.Empty;
-                if (!callerName.IsNullOrEmpty())
+                Dictionary<string, IWHStorageService> map = new();
+                var serviceTypes = App.EffectiveTypes.Where(u => u.IsClass && !u.IsInterface && !u.IsAbstract && typeof(IWHStorageService).IsAssignableFrom(u)).ToList();
+                foreach (var serviceType in serviceTypes)
                 {
-                    var obj = Activator.CreateInstance(serviceType) as IWHStorageService;
-                    if (obj == null) continue;
-                    _storeMap[callerName] = obj;
+                    var callerName = serviceType.GetCustomAttribute<CallerAttribute>()?.Name ?? string.Empty;
+                    if (!callerName.IsNullOrEmpty())
+                    {
+                        var obj = Activator.CreateInstance(serviceType) as IWHStorageService;
+                        if (obj == null) continue;
+                        map[callerName] = obj;
+                    }
                 }
-            }
+                return map;
+            });
+
         }
 
         protected Task<ClaimsPrincipal> GetUserIdentity(string? asscessToken = null)
@@ -140,9 +146,9 @@ namespace Tnb.WarehouseMgr
         [NonAction]
         protected async Task DoUpdate(WareHouseUpInput input)
         {
-            if (_storeMap.ContainsKey(input.loginType))
+            if (_stroageMapLazy.Value.ContainsKey(input.loginType))
             {
-                await _storeMap[input.loginType].Do(input);
+                await _stroageMapLazy.Value[input.loginType].Do(input);
             }
         }
         [NonAction]
@@ -229,7 +235,7 @@ namespace Tnb.WarehouseMgr
                     }
                 }
                 if (0 != ret)
-                    return ;
+                    return;
 
                 // sample setting.
                 PPLBUtility.B_Set_Originpoint(0, 0);
@@ -251,7 +257,7 @@ namespace Tnb.WarehouseMgr
                     PPLBUtility.B_Prn_Text(200, 50, 0, 2, 2, 2, 'N', code);
                     //barcode.
                     PPLBUtility.B_Prn_Barcode(50, 100, 0, "1", 3, 5, 70, 'B', code);//have a counter
-                                                                                          // output.
+                                                                                    // output.
                     PPLBUtility.B_Print_Out(1);// copy 2.
                 }
             }