feat(module: radio): support enum type for RadioGroup (#1840)

components/core/Helpers/EnumHelper.cs

@@ -16,14 +16,15 @@ public static class EnumHelper<T>
         private static readonly Func<T, T, T> _aggregateFunction;
 
         private static IEnumerable<T> _valueList;
-
+        private static IEnumerable<(T Value, string Label)> _valueLabelList;
         private static Type _enumType;
 
         static EnumHelper()
         {
             _enumType = THelper.GetUnderlyingType<T>();
             _aggregateFunction = BuildAggregateFunction();
             _valueList = Enum.GetValues(_enumType).Cast<T>();
+            _valueLabelList = _valueList.Select(value => (value, GetDisplayName(value)));
         }
 
         // There is no constraint or type check for type parameter T, be sure that T is an enumeration type  
@@ -49,11 +50,16 @@ public static IEnumerable<T> GetValueList()
             return _valueList;
         }
 
-        public static string GetDisplayName(T t)
+        public static IEnumerable<(T Value, string Label)> GetValueLabelList()
+        {
+            return _valueLabelList;
+        }
+
+        public static string GetDisplayName(T enumValue)
         {
-            var fieldInfo = _enumType.GetField(t.ToString());
-            return fieldInfo.GetCustomAttribute<DisplayAttribute>(true)?.Name ??
-                 fieldInfo.Name;
+            var enumName = Enum.GetName(_enumType, enumValue);
+            var fieldInfo = _enumType.GetField(enumName);
+            return fieldInfo.GetCustomAttribute<DisplayAttribute>(true)?.Name ?? enumName;
         }
 
         private static Func<T, T, T> BuildAggregateFunction()

components/radio/EnumRadioGroup.cs

@@ -0,0 +1,21 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+
+namespace AntDesign
+{
+    public class EnumRadioGroup<TEnum> : RadioGroup<TEnum>
+    {
+        public EnumRadioGroup()
+        {
+            Options = EnumHelper<TEnum>.GetValueLabelList()
+                .Select(x => new RadioOption<TEnum> { Value = x.Value, Label = x.Label })
+                .ToArray();
+        }
+    }
+}

site/AntDesign.Docs/Demos/Components/Radio/demo/EnumGroup.razor

@@ -0,0 +1,19 @@
+@using System.ComponentModel.DataAnnotations
+
+<EnumRadioGroup TEnum="Fruits" @bind-Value="_radioValue"></EnumRadioGroup>
+<br />
+Value: @_radioValue
+
+@code {
+	Fruits _radioValue = Fruits.Apple;
+
+	enum Fruits
+	{
+		[Display(Name = "🍎 Apple")]
+		Apple,
+
+		Pear,
+
+		Orange
+	}
+}

site/AntDesign.Docs/Demos/Components/Radio/demo/enum-group.md

@@ -0,0 +1,15 @@
+---
+order: 8.5
+title:
+  zh-CN: RadioGroup 组合 - 枚举方式
+  en-US: Radio group - enum type
+---
+
+## zh-CN
+
+通过指定枚举类型，来渲染单选框。
+
+
+## en-US
+
+Render radios by specific enum type.