docs(ContextMenu): add TreeView sample code

src/BootstrapBlazor.Server/Components/Samples/ContextMenus.razor

@@ -58,8 +58,15 @@
     <ContextMenuZone>
         <TreeView TItem="TreeFoo" Items="@TreeItems" />
         <ContextMenu OnBeforeShowCallback="OnBeforeShowCallback">
-            <ContextMenuItem Icon="fa-solid fa-copy" Text="@Localizer["ContextMenuItemCopy"]" OnClick="OnCopy"></ContextMenuItem>
-            <ContextMenuItem Icon="fa-solid fa-paste" Text="@Localizer["ContextMenuItemPast"]" OnClick="OnPaste"></ContextMenuItem>
+            @if (SelectModel?.Id == "1020")
+            {
+                <ContextMenuItem Icon="fa-solid fa-copy" Text="@Localizer["ContextMenuItemCopy"]" OnClick="OnCopy"></ContextMenuItem>
+                <ContextMenuItem Icon="fa-solid fa-paste" Text="@Localizer["ContextMenuItemPast"]" OnClick="OnPaste"></ContextMenuItem>
+            }
+            else
+            {
+                <ContextMenuItem Icon="fa-solid fa-copy" Text="CopySub" OnClick="OnCopySub"></ContextMenuItem>
+            }
         </ContextMenu>
     </ContextMenuZone>
     <ConsoleLogger @ref="_callbackLogger"></ConsoleLogger>

src/BootstrapBlazor.Server/Components/Samples/ContextMenus.razor.cs

@@ -41,15 +41,22 @@ protected override void OnInitialized()
         Items = Foo.GenerateFoo(LocalizerFoo);
     }
 
+    TreeFoo? SelectModel = default;
     private Task OnBeforeShowCallback(object? item)
     {
         if (item is TreeFoo foo)
         {
             _callbackLogger.Log($"{foo.Text} trigger");
+            SelectModel = foo;
         }
         return Task.CompletedTask;
     }
 
+
+    Task OnCopySub(ContextMenuItem item, object value)
+    {
+        return Task.CompletedTask;
+    }
     private bool OnDisabledCallback(ContextMenuItem item, object? context)
     {
         var ret = false;

src/BootstrapBlazor.Server/Locales/en-US.json

@@ -6087,7 +6087,7 @@
     "ContextMenuTreeTitle": "Tree",
     "ContextMenuTreeIntro": "Right click on the <code>Tree</code> to pop up a context menu",
     "ContextMenuCallbackTitle": "ContextMenu Callback",
-    "ContextMenuCallbackIntro": "By setting the <code>ContextMenu</code> component parameter <code>OnBeforeShowCallback</code>, you can get the callback event before the right-click menu pops up, which can be used for data preparation",
+    "ContextMenuCallbackIntro": "By setting the <code>ContextMenu</code> component parameter <code>OnBeforeShowCallback</code>, you can get the callback event before the right-click menu pops up, which can be used for data preparation or render menus based on conditions",
     "ContextMenuDisabledTitle": "OnDisabledCallback",
     "ContextMenuDisabledIntro": "By setting the <code>ContextMenuItem</code> component parameter <code>OnDisabledCallback</code> callback method, you can set whether the current right-click option is disabled."
   },

src/BootstrapBlazor.Server/Locales/zh-CN.json

@@ -6087,7 +6087,7 @@
     "ContextMenuTreeTitle": "Tree 组件",
     "ContextMenuTreeIntro": "点击 <code>Tree</code> 组件行数据右键，弹出上下文关联菜单",
     "ContextMenuCallbackTitle": "ContextMenu 回调",
-    "ContextMenuCallbackIntro": "通过设置 <code>ContextMenu</code> 组件参数 <code>OnBeforeShowCallback</code> 获得右键菜单弹出前回调事件，可用于数据准备工作",
+    "ContextMenuCallbackIntro": "通过设置 <code>ContextMenu</code> 组件参数 <code>OnBeforeShowCallback</code> 获得右键菜单弹出前回调事件，可用于数据准备工作，也可按需渲染菜单",
     "ContextMenuDisabledTitle": "禁止回调方法",
     "ContextMenuDisabledIntro": "通过设置 <code>ContextMenuItem</code> 组件参数 <code>OnDisabledCallback</code> 回调方法可用于设置当前右键选项是否禁用逻辑"
   },

src/BootstrapBlazor/BootstrapBlazor.csproj

@@ -1,7 +1,7 @@
 <Project Sdk="Microsoft.NET.Sdk.Razor">
 
   <PropertyGroup>
-    <Version>9.2.8-beta02</Version>
+    <Version>9.2.8-beta03</Version>
   </PropertyGroup>
 
   <ItemGroup>