diff --git a/src/admin/Bootstrap.Admin/Components/DefaultLayoutComponentBase.cs b/src/admin/Bootstrap.Admin/Components/DefaultLayoutComponentBase.cs
index 0a67ca09..d34b2749 100644
--- a/src/admin/Bootstrap.Admin/Components/DefaultLayoutComponentBase.cs
+++ b/src/admin/Bootstrap.Admin/Components/DefaultLayoutComponentBase.cs
@@ -108,8 +108,8 @@ namespace Bootstrap.Admin.Components
         public void OnDisplayNameChanged(string displayName)
         {
             DisplayName = displayName;
-            Header?.UpdateDisplayName();
-            SideBar?.UpdateDisplayName();
+            Header?.UpdateState();
+            SideBar?.UpdateState();
         }
 
         /// <summary>
diff --git a/src/admin/Bootstrap.Admin/Components/HeaderBase.cs b/src/admin/Bootstrap.Admin/Components/HeaderBase.cs
index 639c753b..9ba2537d 100644
--- a/src/admin/Bootstrap.Admin/Components/HeaderBase.cs
+++ b/src/admin/Bootstrap.Admin/Components/HeaderBase.cs
@@ -29,7 +29,7 @@ namespace Bootstrap.Admin.Components
         /// <summary>
         ///
         /// </summary>
-        public void UpdateDisplayName()
+        public void UpdateState()
         {
             StateHasChanged();
         }
diff --git a/src/admin/Bootstrap.Admin/Components/SideBarBase.cs b/src/admin/Bootstrap.Admin/Components/SideBarBase.cs
index e0ae44d0..fc01c9ad 100644
--- a/src/admin/Bootstrap.Admin/Components/SideBarBase.cs
+++ b/src/admin/Bootstrap.Admin/Components/SideBarBase.cs
@@ -24,7 +24,7 @@ namespace Bootstrap.Admin.Components
         /// <summary>
         ///
         /// </summary>
-        public void UpdateDisplayName()
+        public void UpdateState()
         {
             StateHasChanged();
         }
diff --git a/src/admin/Bootstrap.Admin/Pages/Admin/Profiles.razor b/src/admin/Bootstrap.Admin/Pages/Admin/Profiles.razor
index cfc286bf..537662e9 100644
--- a/src/admin/Bootstrap.Admin/Pages/Admin/Profiles.razor
+++ b/src/admin/Bootstrap.Admin/Pages/Admin/Profiles.razor
@@ -1,7 +1,7 @@
 <div class="card" asp-auth="saveDisplayName">
     <div class="card-header">基本资料</div>
     <div class="card-body" data-toggle="LgbValidate" data-valid-button="#btnSaveDisplayName">
-        @if (!(Model?.IsDemo ?? false))
+        @if (IsDemo)
         {
             <div class="alert alert-danger" role="alert">
                 <span>演示系统禁止更改管理员显示名称</span>
@@ -19,7 +19,7 @@
                 </div>
             </div>
         </form>
-        @if (!(Model?.IsDemo ?? false))
+        @if (!IsDemo)
         {
             <div class="modal-footer">
                 <button id="btnSaveDisplayName" data-method="user" class="btn btn-secondary" type="button" @onclick="SaveDisplayName"><i class="fa fa-save"></i><span>保存</span></button>
@@ -30,7 +30,7 @@
 <div class="card" asp-auth="savePassword" asp-condition="!@Model?.External">
     <div class="card-header">修改密码</div>
     <div class="card-body" data-toggle="LgbValidate" data-valid-button="#btnSavePassword">
-        @if (!(Model?.IsDemo ?? false))
+        @if (IsDemo)
         {
             <div class="alert alert-danger" role="alert">
                 <span>演示系统禁止更改管理员密码</span>
@@ -54,7 +54,7 @@
                 </div>
             </div>
         </form>
-        @if (!(Model?.IsDemo ?? false))
+        @if (!IsDemo)
         {
             <div class="modal-footer">
                 <button id="btnSavePassword" data-method="password" class="btn btn-secondary" type="button"><i class="fa fa-save"></i><span>保存</span></button>
@@ -121,16 +121,19 @@
     ///
     /// </summary>
     [CascadingParameter(Name = "Default")]
-    public DefaultLayout RootLayout { get; protected set; } = new DefaultLayout();
+    public DefaultLayout? RootLayout { get; protected set; }
 
     protected ProfilesModel? Model { get; set; }
 
     protected string DisplayName { get; set; } = "";
 
+    protected bool IsDemo { get; set; } = false;
+
     protected override void OnInitialized()
     {
-        Model = new ProfilesModel(RootLayout.UserName);
+        Model = new ProfilesModel(RootLayout?.UserName);
         DisplayName = Model.DisplayName;
+        IsDemo = Model?.IsDemo ?? false;
     }
 
     private void SaveDisplayName()
@@ -139,7 +142,7 @@
         {
             if (Bootstrap.DataAccess.UserHelper.SaveDisplayName(Model.UserName, DisplayName))
             {
-                RootLayout.OnDisplayNameChanged(DisplayName);
+                RootLayout?.OnDisplayNameChanged(DisplayName);
             }
         }
     }