Test

Author: javiercn

src/Components/Web/src/Forms/InputRadioContext.cs

@@ -8,21 +8,19 @@ namespace Microsoft.AspNetCore.Components.Forms;
 /// </summary>
 internal sealed class InputRadioContext
 {
+    private readonly Func<object?> _valueGetter;
+
     public InputRadioContext? ParentContext { get; }
     public EventCallback<ChangeEventArgs> ChangeEventCallback { get; }
+    public object? CurrentValue => _valueGetter();
 
     // Mutable properties that may change any time an InputRadioGroup is rendered
     public string? GroupName { get; set; }
-    public object? CurrentValue { get; set; }
     public string? FieldClass { get; set; }
 
-    /// <summary>
-    /// Instantiates a new <see cref="InputRadioContext" />.
-    /// </summary>
-    /// <param name="parentContext">The parent context, if any.</param>
-    /// <param name="changeEventCallback">The event callback to be invoked when the selected value is changed.</param>
-    public InputRadioContext(InputRadioContext? parentContext, EventCallback<ChangeEventArgs> changeEventCallback)
+    public InputRadioContext(Func<object?> valueGetter, InputRadioContext? parentContext, EventCallback<ChangeEventArgs> changeEventCallback)
     {
+        _valueGetter = valueGetter;
         ParentContext = parentContext;
         ChangeEventCallback = changeEventCallback;
     }

src/Components/Web/src/Forms/InputRadioGroup.cs

@@ -34,7 +34,7 @@ protected override void OnParametersSet()
         if (_context is null)
         {
             var changeEventCallback = EventCallback.Factory.CreateBinder<string?>(this, __value => CurrentValueAsString = __value, CurrentValueAsString);
-            _context = new InputRadioContext(CascadedContext, changeEventCallback);
+            _context = new InputRadioContext(() => CurrentValue, CascadedContext, changeEventCallback);
         }
         else if (_context.ParentContext != CascadedContext)
         {
@@ -59,7 +59,7 @@ protected override void OnParametersSet()
             // Otherwise, just use a GUID to disambiguate this group's radio inputs from any others on the page.
             _context.GroupName = _defaultGroupName;
         }
-        _context.CurrentValue = CurrentValue;
+
         _context.FieldClass = EditContext?.FieldCssClass(FieldIdentifier);
     }