diff --git a/src/BootstrapBlazor/Components/Button/PopConfirmButtonBase.cs b/src/BootstrapBlazor/Components/Button/PopConfirmButtonBase.cs
index ada1bec3359..623de23331b 100644
--- a/src/BootstrapBlazor/Components/Button/PopConfirmButtonBase.cs
+++ b/src/BootstrapBlazor/Components/Button/PopConfirmButtonBase.cs
@@ -69,6 +69,7 @@ public abstract class PopConfirmButtonBase : ButtonBase
     /// 获得/设置 点击确认弹窗前回调方法 返回真时弹出弹窗 返回假时不弹出 默认 null
     /// </summary>
     [Parameter]
+    [NotNull]
     public Func<Task<bool>>? OnBeforeClick { get; set; }
 
     /// <summary>
diff --git a/src/BootstrapBlazor/Components/Modal/ModalDialog.razor.cs b/src/BootstrapBlazor/Components/Modal/ModalDialog.razor.cs
index 7a537deef68..8073b72187c 100644
--- a/src/BootstrapBlazor/Components/Modal/ModalDialog.razor.cs
+++ b/src/BootstrapBlazor/Components/Modal/ModalDialog.razor.cs
@@ -165,7 +165,7 @@ public partial class ModalDialog : IHandlerException
     public RenderFragment? HeaderTemplate { get; set; }
 
     /// <summary>
-    /// 获得/设置 保存按钮回调委托
+    /// 获得/设置 保存按钮回调委托 返回 true 并且设置 <see cref="IsAutoCloseAfterSave"/> true 时自动关闭弹窗
     /// </summary>
     [Parameter]
     public Func<Task<bool>>? OnSaveAsync { get; set; }
diff --git a/src/BootstrapBlazor/Components/Segmented/Segmented.razor.scss b/src/BootstrapBlazor/Components/Segmented/Segmented.razor.scss
index a82fc0250ee..8a01fb4cfc8 100644
--- a/src/BootstrapBlazor/Components/Segmented/Segmented.razor.scss
+++ b/src/BootstrapBlazor/Components/Segmented/Segmented.razor.scss
@@ -51,7 +51,6 @@
 
     .segmented-item {
         padding: var(--bb-segmented-item-padding);
-        text-align: center;
         cursor: pointer;
         border-radius: var(--bb-segmented-item-border-radius);
         line-height: var(--bb-segmented-item-height);
@@ -59,6 +58,9 @@
         position: relative;
         transition: color 0.2s cubic-bezier(0.645, 0.045, 0.355, 1);
         white-space: nowrap;
+        display: flex;
+        align-items: center;
+        justify-content: center;
 
         &.mask {
             background-color: var(--bb-segmented-item-selected-bg);
@@ -111,5 +113,5 @@
 }
 
 [data-bs-theme='dark'] .segmented {
-  --bb-segmented-item-selected-bg: rgba(var(--bs-body-color-rgb),.12);
+    --bb-segmented-item-selected-bg: rgba(var(--bs-body-color-rgb),.12);
 }
diff --git a/src/BootstrapBlazor/Extensions/DialogServiceExtensions.cs b/src/BootstrapBlazor/Extensions/DialogServiceExtensions.cs
index 7682849fb57..4adbf7620ac 100644
--- a/src/BootstrapBlazor/Extensions/DialogServiceExtensions.cs
+++ b/src/BootstrapBlazor/Extensions/DialogServiceExtensions.cs
@@ -207,12 +207,8 @@ public static async Task ShowSaveDialog<TComponent>(this DialogService service,
             ShowSaveButton = true,
             OnSaveAsync = saveCallback
         };
-        Dictionary<string, object?>? parameters = null;
-        if (parametersFactory != null)
-        {
-            parameters = [];
-            parametersFactory.Invoke(parameters);
-        }
+        var parameters = new Dictionary<string, object?>();
+        parametersFactory?.Invoke(parameters);
         option.Component = BootstrapDynamicComponent.CreateComponent<TComponent>(parameters);
         configureOption?.Invoke(option);
         await service.Show(option, dialog);
@@ -238,7 +234,6 @@ public static async Task ShowCloseDialog<TComponent>(this DialogService service,
         parametersFactory?.Invoke(parameters);
         option.Component = BootstrapDynamicComponent.CreateComponent<TComponent>(parameters);
         configureOption?.Invoke(option);
-
         await service.Show(option, dialog);
     }
 
diff --git a/test/UnitTest/Components/DisplayTest.cs b/test/UnitTest/Components/DisplayTest.cs
index fc9f53e7528..425d5d471f1 100644
--- a/test/UnitTest/Components/DisplayTest.cs
+++ b/test/UnitTest/Components/DisplayTest.cs
@@ -14,9 +14,9 @@ public void FormatterAsync_Ok()
     {
         var cut = Context.RenderComponent<Display<string>>(pb =>
         {
-            pb.Add(a => a.FormatterAsync, new Func<string, Task<string>>(v =>
+            pb.Add(a => a.FormatterAsync, new Func<string, Task<string?>>(v =>
             {
-                return Task.FromResult("FormattedValue");
+                return Task.FromResult<string?>("FormattedValue");
             }));
         });
         Assert.Contains("FormattedValue", cut.Markup);
@@ -56,10 +56,10 @@ public void LookupService_Ok()
     [Fact]
     public void TypeResolver_Ok()
     {
-        var cut = Context.RenderComponent<Display<DisplayTest.Fish[]>>(pb =>
+        var cut = Context.RenderComponent<Display<Fish[]>>(pb =>
         {
-            pb.Add(a => a.Value, new DisplayTest.Fish[] { new DisplayTest.Fish() { Value = "1" } });
-            pb.Add(a => a.TypeResolver, new Func<Assembly, string, bool, Type>((assembly, typeName, ignoreCase) => typeof(DisplayTest.Fish)));
+            pb.Add(a => a.Value, new Fish[] { new() { Value = "1" } });
+            pb.Add(a => a.TypeResolver, new Func<Assembly, string, bool, Type>((assembly, typeName, ignoreCase) => typeof(Fish)));
         });
         Assert.Equal("<div class=\"form-control is-display\">1</div>", cut.Markup);
     }
@@ -67,9 +67,9 @@ public void TypeResolver_Ok()
     [Fact]
     public void TypeResolver_Null()
     {
-        var cut = Context.RenderComponent<Display<DisplayTest.Fish[]>>(pb =>
+        var cut = Context.RenderComponent<Display<Fish[]>>(pb =>
         {
-            pb.Add(a => a.Value, new DisplayTest.Fish[] { new DisplayTest.Fish() { Value = "1" } });
+            pb.Add(a => a.Value, new Fish[] { new() { Value = "1" } });
         });
         Assert.Equal("<div class=\"form-control is-display\"></div>", cut.Markup);
     }
diff --git a/test/UnitTest/Components/TableTest.cs b/test/UnitTest/Components/TableTest.cs
index 952ac17c33c..0245619df1c 100644
--- a/test/UnitTest/Components/TableTest.cs
+++ b/test/UnitTest/Components/TableTest.cs
@@ -6949,9 +6949,9 @@ public void Value_Formatter()
         var col = cut.FindComponent<TableColumn<Foo, int>>();
         col.SetParametersAndRender(pb =>
         {
-            pb.Add(a => a.Formatter, new Func<object?, Task<string>>(obj =>
+            pb.Add(a => a.Formatter, new Func<object?, Task<string?>>(obj =>
             {
-                return Task.FromResult("test-formatter");
+                return Task.FromResult<string?>("test-formatter");
             }));
         });
         var table = cut.FindComponent<MockTable>();
diff --git a/test/UnitTest/Extensions/ITableColumnExtensionsTest.cs b/test/UnitTest/Extensions/ITableColumnExtensionsTest.cs
index 263f42b317e..bc7cdbb2804 100644
--- a/test/UnitTest/Extensions/ITableColumnExtensionsTest.cs
+++ b/test/UnitTest/Extensions/ITableColumnExtensionsTest.cs
@@ -74,7 +74,8 @@ public void CopyValue_Ok()
             FormatString = "test-format",
             Formatter = obj =>
             {
-                return Task.FromResult("test-formatter");
+                var ret = "test-formatter";
+                return Task.FromResult<string?>(ret);
             },
             HeaderTemplate = new RenderFragment<ITableColumn>(col => builder => builder.AddContent(0, "test-header")),
             OnCellRender = args => { },