refactor: 调整可为空

Author: ArgoZhang

src/BootstrapBlazor/Components/Checkbox/CheckboxListGeneric.razor

@@ -1,6 +1,6 @@
 @namespace BootstrapBlazor.Components
 @typeparam TValue
-@inherits ValidateBase<List<TValue?>>
+@inherits ValidateBase<List<TValue>>
 
 @if (IsShowLabel)
 {

src/BootstrapBlazor/Components/Checkbox/CheckboxListGeneric.razor.cs

@@ -97,7 +97,7 @@ public partial class CheckboxListGeneric<TValue> : IModelEqualityComparer<TValue
     /// 获得/设置 SelectedItemChanged 方法
     /// </summary>
     [Parameter]
-    public Func<IEnumerable<SelectedItem<TValue>>, List<TValue?>, Task>? OnSelectedChanged { get; set; }
+    public Func<IEnumerable<SelectedItem<TValue>>, List<TValue>, Task>? OnSelectedChanged { get; set; }
 
     /// <summary>
     /// 获得/设置 最多选中数量
@@ -204,7 +204,7 @@ private async Task<bool> OnBeforeStateChanged(CheckboxState state)
     private async Task OnStateChanged(SelectedItem<TValue> item, bool v)
     {
         item.Active = v;
-        var items = new List<TValue?>();
+        var items = new List<TValue>();
         if (Value != null)
         {
             items.AddRange(Value);
@@ -217,7 +217,7 @@ private async Task OnStateChanged(SelectedItem<TValue> item, bool v)
         }
         else
         {
-            items.Remove(val);
+            items.Remove(val!);
         }
 
         CurrentValue = items;

src/BootstrapBlazor/Components/Radio/RadioListGeneric.razor.cs

@@ -120,7 +120,7 @@ protected override void OnParametersSet()
         var t = NullableUnderlyingType ?? typeof(TValue);
         if (t.IsEnum && Items == null)
         {
-            Items = t.ToSelectList<TValue>((NullableUnderlyingType != null && IsAutoAddNullItem) ? new SelectedItem<TValue>(default, NullItemText) : null);
+            Items = t.ToSelectList<TValue>((NullableUnderlyingType != null && IsAutoAddNullItem) ? new SelectedItem<TValue>(default!, NullItemText) : null);
         }
 
         Items ??= [];

src/BootstrapBlazor/Components/SelectGeneric/SelectGeneric.razor.cs

@@ -566,7 +566,7 @@ private async Task OnChange(ChangeEventArgs args)
 
             if (item == null)
             {
-                TValue? val = default;
+                TValue val = default!;
                 if (TextConvertToValueCallback != null)
                 {
                     val = await TextConvertToValueCallback(v);

src/BootstrapBlazor/Components/SelectGeneric/SelectOptionGeneric.cs

@@ -58,7 +58,7 @@ protected override void OnInitialized()
         Container?.Add(ToSelectedItem());
     }
 
-    private SelectedItem<TValue> ToSelectedItem() => new(Value, Text ?? "")
+    private SelectedItem<TValue> ToSelectedItem() => new(Value!, Text ?? "")
     {
         Active = Active,
         GroupName = GroupName ?? "",

src/BootstrapBlazor/Misc/SelectedItemOfT.cs

@@ -13,14 +13,14 @@ public class SelectedItem<T>
     /// <summary>
     /// 构造函数
     /// </summary>
-    public SelectedItem() { }
+    public SelectedItem() { Value = default!; }
 
     /// <summary>
     /// 构造函数
     /// </summary>
     /// <param name="value"></param>
     /// <param name="text"></param>
-    public SelectedItem(T? value, string text)
+    public SelectedItem(T value, string text)
     {
         Value = value;
         Text = text;
@@ -34,7 +34,7 @@ public SelectedItem(T? value, string text)
     /// <summary>
     /// 获得/设置 选项值
     /// </summary>
-    public T? Value { get; set; }
+    public T Value { get; set; }
 
     /// <summary>
     /// 获得/设置 是否选中

test/UnitTest/Components/CheckboxListGenericTest.cs

@@ -78,12 +78,12 @@ public void IsVertical_Ok()
     [Fact]
     public async Task NullItem_Ok()
     {
-        var items = new List<SelectedItem<Foo>>()
+        var items = new List<SelectedItem<Foo?>>()
         {
             new(null, "Select ..."),
             new(new Foo() { Id = 2, Name = "Test2" }, "Test 2")
         };
-        var cut = Context.RenderComponent<CheckboxListGeneric<Foo>>(pb =>
+        var cut = Context.RenderComponent<CheckboxListGeneric<Foo?>>(pb =>
         {
             pb.Add(a => a.Items, items);
         });