doc: 更新示例

Author: ArgoZhang

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

@@ -351,6 +351,14 @@ private enum MultiSelectEnumFoo
     </div>
  </DemoBlock>
 
+<DemoBlock Title="@Localizer["MultiSelectGenericTitle"]" Introduction="@Localizer["MultiSelectGenericIntro"]" Name="Generic">
+    <div class="row">
+        <div class="col-12">
+            <MultiSelectGeneric Items="@FooItems" @bind-Value="_genericValue" ShowSearch="true" IsPopover="true"></MultiSelectGeneric>
+        </div>
+    </div>
+</DemoBlock>
+
 <AttributeTable Items="@GetAttributes()"></AttributeTable>
 
 <EventTable Items="@GetEvents()"></EventTable>

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

@@ -125,6 +125,11 @@ private enum MultiSelectEnumFoo
     private bool _showToolbar = true;
     private bool _showSearch = true;
 
+    [NotNull]
+    private List<SelectedItem<Foo>>? FooItems { get; set; }
+
+    private List<Foo>? _genericValue = null;
+
     private async Task<SelectedItem> OnEditCallback(string value)
     {
         await Task.Delay(100);
@@ -188,6 +193,7 @@ protected override void OnInitialized()
         Items8 = GenerateItems();
         TemplateItems = GenerateItems();
         EditableItems = GenerateItems();
+        FooItems = [.. Foo.GenerateFoo(LocalizerFoo).Select(i => new SelectedItem<Foo>(i, i.Name!))];
 
         // 初始化数据
         DataSource =