diff --git a/src/BootstrapBlazor.Shared/Samples/Table/TablesExport.razor b/src/BootstrapBlazor.Shared/Samples/Table/TablesExport.razor
index 3b3d56a98..c9417cf91 100644
--- a/src/BootstrapBlazor.Shared/Samples/Table/TablesExport.razor
+++ b/src/BootstrapBlazor.Shared/Samples/Table/TablesExport.razor
@@ -62,7 +62,7 @@
             <TableColumn @bind-Field="@context.Count" />
         </TableColumns>
         <ExportButtonDropdownTemplate Context="ExportContext">
-            <div class="dropdown-item" @onclick="() => ExcelExportAsync(ExportContext)">
+            <div class="dropdown-item" @onclick="ExportContext.ExportAsync">
                 <i class="fa-regular fa-file-excel"></i>
                 <span>MS-Excel</span>
             </div>
diff --git a/src/BootstrapBlazor.Shared/Samples/Table/TablesExport.razor.cs b/src/BootstrapBlazor.Shared/Samples/Table/TablesExport.razor.cs
index af9295e1d..3fae9cb54 100644
--- a/src/BootstrapBlazor.Shared/Samples/Table/TablesExport.razor.cs
+++ b/src/BootstrapBlazor.Shared/Samples/Table/TablesExport.razor.cs
@@ -58,7 +58,5 @@ public partial class TablesExport
 
     private static Task<bool> OnExportAsync(IEnumerable<Foo> Items, QueryPageOptions options) => Task.FromResult(true);
 
-    private static Task ExcelExportAsync(ITableExportContext<Foo> context) => context.ExportAsync();
-
     private Task CsvExportAsync() => ToastService.Success("CSV export", "Export CSV data successfully");
 }
diff --git a/test/UnitTest/Components/TableTest.cs b/test/UnitTest/Components/TableTest.cs
index 4e1392118..785106841 100644
--- a/test/UnitTest/Components/TableTest.cs
+++ b/test/UnitTest/Components/TableTest.cs
@@ -577,6 +577,7 @@ public class TableTest : TableTestBase
     [Fact]
     public void ExportButtonDropdownTemplate_Ok()
     {
+        ITableExportContext<Foo>? context = null;
         var localizer = Context.Services.GetRequiredService<IStringLocalizer<Foo>>();
         var cut = Context.RenderComponent<BootstrapBlazorRoot>(pb =>
         {
@@ -585,8 +586,9 @@ public class TableTest : TableTestBase
                 pb.Add(a => a.ShowToolbar, true);
                 pb.Add(a => a.ShowExportButton, true);
                 pb.Add(a => a.ExportButtonText, "Test_Export");
-                pb.Add(a => a.ExportButtonDropdownTemplate, builder =>
+                pb.Add(a => a.ExportButtonDropdownTemplate, c => builder =>
                 {
+                    context = c;
                     builder.OpenElement(0, "div");
                     builder.AddContent(1, "test-export-dropdown-item");
                     builder.CloseElement();
@@ -602,6 +604,13 @@ public class TableTest : TableTestBase
             });
         });
         cut.Contains("test-export-dropdown-item");
+        Assert.NotNull(context);
+
+        Assert.Single(context.Columns);
+        Assert.Single(context.GetVisibleColumns());
+        Assert.NotNull(context.BuildQueryPageOptions());
+        Assert.Equal(80, context.Rows.Count());
+        Assert.NotNull(context.ExportAsync());
     }
 
     [Fact]
diff --git a/test/UnitTest/Extensions/ObjectExtensionsTest.cs b/test/UnitTest/Extensions/ObjectExtensionsTest.cs
index eb4120313..0b0474db8 100644
--- a/test/UnitTest/Extensions/ObjectExtensionsTest.cs
+++ b/test/UnitTest/Extensions/ObjectExtensionsTest.cs
@@ -56,6 +56,16 @@ public class ObjectExtensionsTest
         Assert.Equal(expect, actual);
     }
 
+    [Theory]
+    [InlineData(typeof(TimeSpan?), true)]
+    [InlineData(typeof(TimeSpan), true)]
+    [InlineData(typeof(string), false)]
+    public static void IsTimeSpan_Ok(Type source, bool expect)
+    {
+        var actual = source.IsTimeSpan();
+        Assert.Equal(expect, actual);
+    }
+
     [Theory]
     [InlineData(typeof(SortOrder), "枚举")]
     [InlineData(typeof(int), "数字")]