diff --git a/src/blazor/admin/BootstrapAdmin.DataAccess.EFCore/Services/DefaultDataService.cs b/src/blazor/admin/BootstrapAdmin.DataAccess.EFCore/Services/DefaultDataService.cs
index 9e20112a..abf6c91b 100644
--- a/src/blazor/admin/BootstrapAdmin.DataAccess.EFCore/Services/DefaultDataService.cs
+++ b/src/blazor/admin/BootstrapAdmin.DataAccess.EFCore/Services/DefaultDataService.cs
@@ -8,11 +8,11 @@ using Microsoft.EntityFrameworkCore;
 namespace BootstrapAdmin.DataAccess.EFCore.Services
 {
     /// <summary>
-    /// PetaPoco ORM 的 IDataService 接口实现
+    /// EFCore ORM 的 IDataService 接口实现
     /// </summary>
     class DefaultDataService<TModel> : DataServiceBase<TModel> where TModel : class, new()
     {
-        private IDbContextFactory<BootstrapAdminContext> DbFactory { get; set; }
+        private IDbContextFactory<BootstrapAdminContext> DbFactory { get; }
 
         /// <summary>
         /// 构造函数
diff --git a/src/blazor/admin/BootstrapAdmin.DataAccess.PetaPoco/Services/DefaultDataService.cs b/src/blazor/admin/BootstrapAdmin.DataAccess.PetaPoco/Services/DefaultDataService.cs
index 565ee694..06d3bc9e 100644
--- a/src/blazor/admin/BootstrapAdmin.DataAccess.PetaPoco/Services/DefaultDataService.cs
+++ b/src/blazor/admin/BootstrapAdmin.DataAccess.PetaPoco/Services/DefaultDataService.cs
@@ -14,12 +14,12 @@ namespace BootstrapBlazor.DataAcces.PetaPoco.Services
     /// </summary>
     class DefaultDataService<TModel> : DataServiceBase<TModel> where TModel : class, new()
     {
-        private readonly IDatabase _db;
+        private IDatabase Database { get; }
 
         /// <summary>
         /// 构造函数
         /// </summary>
-        public DefaultDataService(IDatabase db) => _db = db;
+        public DefaultDataService(IDatabase db) => Database = db;
 
         /// <summary>
         /// 删除方法
@@ -30,7 +30,7 @@ namespace BootstrapBlazor.DataAcces.PetaPoco.Services
         {
             // 通过模型获取主键列数据
             // 支持批量删除
-            _db.DeleteBatch(models);
+            Database.DeleteBatch(models);
             return Task.FromResult(true);
         }
 
@@ -44,11 +44,11 @@ namespace BootstrapBlazor.DataAcces.PetaPoco.Services
         {
             if (changedType == ItemChangedType.Add)
             {
-                await _db.InsertAsync(model);
+                await Database.InsertAsync(model);
             }
             else
             {
-                await _db.UpdateAsync(model);
+                await Database.UpdateAsync(model);
             }
             return true;
         }
@@ -70,14 +70,14 @@ namespace BootstrapBlazor.DataAcces.PetaPoco.Services
             var filters = option.Filters.Concat(option.Searchs).Concat(option.CustomerSearchs);
             if (option.IsPage)
             {
-                var items = await _db.PageAsync<TModel>(option.PageIndex, option.PageItems, filters, option.SortName, option.SortOrder);
+                var items = await Database.PageAsync<TModel>(option.PageIndex, option.PageItems, filters, option.SortName, option.SortOrder);
 
                 ret.TotalCount = Convert.ToInt32(items.TotalItems);
                 ret.Items = items.Items;
             }
             else
             {
-                var items = await _db.FetchAsync<TModel>(filters, option.SortName, option.SortOrder);
+                var items = await Database.FetchAsync<TModel>(filters, option.SortName, option.SortOrder);
                 ret.TotalCount = items.Count;
                 ret.Items = items;
             }
diff --git a/src/blazor/admin/BootstrapAdmin.DataAccess.PetaPoco/Services/NavigationsService.cs b/src/blazor/admin/BootstrapAdmin.DataAccess.PetaPoco/Services/NavigationsService.cs
index 0a175bbe..f0bda276 100644
--- a/src/blazor/admin/BootstrapAdmin.DataAccess.PetaPoco/Services/NavigationsService.cs
+++ b/src/blazor/admin/BootstrapAdmin.DataAccess.PetaPoco/Services/NavigationsService.cs
@@ -9,7 +9,7 @@ namespace BootstrapAdmin.DataAccess.PetaPoco.Services
     /// </summary>
     class NavigationsService : INavigations
     {
-        private IDatabase Database { get; set; }
+        private IDatabase Database { get; }
 
         /// <summary>
         ///