[Windows] Fix for RadioButton BorderColor and BorderWidth not updated at runtime

src/Controls/src/Core/PublicAPI/net-android/PublicAPI.Unshipped.txt

@@ -148,4 +148,5 @@ static readonly Microsoft.Maui.Controls.TitleBar.SubtitleProperty -> Microsoft.M
 static readonly Microsoft.Maui.Controls.TitleBar.TitleProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.TitleBar.TrailingContentProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.Window.TitleBarProperty -> Microsoft.Maui.Controls.BindableProperty!
-virtual Microsoft.Maui.Controls.Application.ActivateWindow(Microsoft.Maui.Controls.Window! window) -> void
+virtual Microsoft.Maui.Controls.Application.ActivateWindow(Microsoft.Maui.Controls.Window! window) -> void
+~override Microsoft.Maui.Controls.RadioButton.OnPropertyChanged(string propertyName = null) -> void

src/Controls/src/Core/PublicAPI/net-ios/PublicAPI.Unshipped.txt

@@ -348,3 +348,4 @@ virtual Microsoft.Maui.Controls.Handlers.Items2.ItemsViewHandler2<TItemsView>.Up
 *REMOVED*override Microsoft.Maui.Controls.Handlers.Compatibility.FrameRenderer.SetNeedsLayout() -> void
 *REMOVED*override Microsoft.Maui.Controls.Handlers.Compatibility.FrameRenderer.MovedToWindow() -> void
 override Microsoft.Maui.Controls.Handlers.Compatibility.VisualElementRenderer<TElement>.MovedToWindow() -> void
+~override Microsoft.Maui.Controls.RadioButton.OnPropertyChanged(string propertyName = null) -> void

src/Controls/src/Core/PublicAPI/net-maccatalyst/PublicAPI.Unshipped.txt

@@ -347,4 +347,5 @@ virtual Microsoft.Maui.Controls.Handlers.Items2.ItemsViewDelegator2<TItemsView,
 virtual Microsoft.Maui.Controls.Handlers.Items2.ItemsViewHandler2<TItemsView>.UpdateLayout() -> void
 *REMOVED*override Microsoft.Maui.Controls.Handlers.Compatibility.FrameRenderer.SetNeedsLayout() -> void
 *REMOVED*override Microsoft.Maui.Controls.Handlers.Compatibility.FrameRenderer.MovedToWindow() -> void
-override Microsoft.Maui.Controls.Handlers.Compatibility.VisualElementRenderer<TElement>.MovedToWindow() -> void
+override Microsoft.Maui.Controls.Handlers.Compatibility.VisualElementRenderer<TElement>.MovedToWindow() -> void
+~override Microsoft.Maui.Controls.RadioButton.OnPropertyChanged(string propertyName = null) -> void

src/Controls/src/Core/PublicAPI/net-tizen/PublicAPI.Unshipped.txt

@@ -143,4 +143,5 @@ static readonly Microsoft.Maui.Controls.TitleBar.SubtitleProperty -> Microsoft.M
 static readonly Microsoft.Maui.Controls.TitleBar.TitleProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.TitleBar.TrailingContentProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.Window.TitleBarProperty -> Microsoft.Maui.Controls.BindableProperty!
-virtual Microsoft.Maui.Controls.Application.ActivateWindow(Microsoft.Maui.Controls.Window! window) -> void
+virtual Microsoft.Maui.Controls.Application.ActivateWindow(Microsoft.Maui.Controls.Window! window) -> void
+~override Microsoft.Maui.Controls.RadioButton.OnPropertyChanged(string propertyName = null) -> void

src/Controls/src/Core/PublicAPI/net-windows/PublicAPI.Unshipped.txt

@@ -149,4 +149,5 @@ static readonly Microsoft.Maui.Controls.TitleBar.SubtitleProperty -> Microsoft.M
 static readonly Microsoft.Maui.Controls.TitleBar.TitleProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.TitleBar.TrailingContentProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.Window.TitleBarProperty -> Microsoft.Maui.Controls.BindableProperty!
-virtual Microsoft.Maui.Controls.Application.ActivateWindow(Microsoft.Maui.Controls.Window! window) -> void
+virtual Microsoft.Maui.Controls.Application.ActivateWindow(Microsoft.Maui.Controls.Window! window) -> void
+~override Microsoft.Maui.Controls.RadioButton.OnPropertyChanged(string propertyName = null) -> void

src/Controls/src/Core/PublicAPI/net/PublicAPI.Unshipped.txt

@@ -143,4 +143,5 @@ static readonly Microsoft.Maui.Controls.TitleBar.SubtitleProperty -> Microsoft.M
 static readonly Microsoft.Maui.Controls.TitleBar.TitleProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.TitleBar.TrailingContentProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.Window.TitleBarProperty -> Microsoft.Maui.Controls.BindableProperty!
-virtual Microsoft.Maui.Controls.Application.ActivateWindow(Microsoft.Maui.Controls.Window! window) -> void
+virtual Microsoft.Maui.Controls.Application.ActivateWindow(Microsoft.Maui.Controls.Window! window) -> void
+~override Microsoft.Maui.Controls.RadioButton.OnPropertyChanged(string propertyName = null) -> void

src/Controls/src/Core/PublicAPI/netstandard/PublicAPI.Unshipped.txt

@@ -143,4 +143,5 @@ static readonly Microsoft.Maui.Controls.TitleBar.SubtitleProperty -> Microsoft.M
 static readonly Microsoft.Maui.Controls.TitleBar.TitleProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.TitleBar.TrailingContentProperty -> Microsoft.Maui.Controls.BindableProperty!
 static readonly Microsoft.Maui.Controls.Window.TitleBarProperty -> Microsoft.Maui.Controls.BindableProperty!
-virtual Microsoft.Maui.Controls.Application.ActivateWindow(Microsoft.Maui.Controls.Window! window) -> void
+virtual Microsoft.Maui.Controls.Application.ActivateWindow(Microsoft.Maui.Controls.Window! window) -> void
+~override Microsoft.Maui.Controls.RadioButton.OnPropertyChanged(string propertyName = null) -> void

src/Controls/src/Core/RadioButton/RadioButton.cs

@@ -1,6 +1,7 @@
 #nullable disable
 using System;
 using System.Diagnostics;
+using System.Runtime.CompilerServices;
 using Microsoft.Extensions.Logging;
 using Microsoft.Maui.Controls.Internals;
 using Microsoft.Maui.Controls.Shapes;
@@ -279,6 +280,19 @@ void IBorderElement.OnBorderColorPropertyChanged(Color oldValue, Color newValue)
 		{
 		}
 
+		protected override void OnPropertyChanged([CallerMemberName] string propertyName = null)
+		{
+			base.OnPropertyChanged(propertyName);
+			if (propertyName == BorderColorProperty.PropertyName)
+			{
+				Handler?.UpdateValue(nameof(IRadioButton.StrokeColor));
+			}
+			else if (propertyName == BorderWidthProperty.PropertyName)
+			{
+				Handler?.UpdateValue(nameof(IRadioButton.StrokeThickness));
+			}
+		}
+
 		bool IBorderElement.IsCornerRadiusSet() => IsSet(BorderElement.CornerRadiusProperty);
 		bool IBorderElement.IsBackgroundColorSet() => IsSet(BackgroundColorProperty);
 		bool IBorderElement.IsBackgroundSet() => IsSet(BackgroundProperty);
@@ -638,7 +652,7 @@ public string ContentAsString()
 		Font ITextStyle.Font => this.ToFont();
 
 #if ANDROID
-		object IContentView.Content 
+		object IContentView.Content
 		{
 			get
 			{

src/Controls/tests/TestCases.HostApp/Issues/Issue15806.cs

@@ -0,0 +1,70 @@
+namespace Controls.TestCases.HostApp.Issues;
+
+[Issue(IssueTracker.Github, 15806, "RadioButton Border color not working for focused visual state", PlatformAffected.All)]
+class Issue15806 : ContentPage
+{
+	public Issue15806()
+	{
+		VerticalStackLayout verticalStackLayout = new VerticalStackLayout();
+
+		Style radioButtonStyle = new Style(typeof(RadioButton))
+		{
+			Setters =
+			{
+				new Setter
+				{
+					Property = VisualStateManager.VisualStateGroupsProperty,
+					Value = new VisualStateGroupList
+					{
+						new VisualStateGroup
+						{
+							Name = "CheckedStates",
+							States =
+							{
+								new VisualState
+								{
+									Name = "Normal",
+									Setters =
+									{
+										new Setter { Property = RadioButton.BorderColorProperty, Value = Colors.Red },
+										new Setter { Property = RadioButton.BorderWidthProperty, Value = 2 } 
+									}
+								},
+
+								new VisualState
+								{
+									Name = "Focused",
+									Setters = 
+									{
+										new Setter { Property = RadioButton.BorderColorProperty, Value = Colors.DarkCyan },
+										new Setter { Property = RadioButton.BorderWidthProperty, Value = 2 }
+									}
+								}
+							}
+						}
+					}
+				}
+			}
+		};
+
+		RadioButton focusedRadioButton = new RadioButton
+		{
+			AutomationId = "FocusedRadioButton",
+			Content = "RadioButton",
+			Style = radioButtonStyle,
+			IsChecked = true,
+		};
+
+		RadioButton normalRadioButton = new RadioButton
+		{
+			AutomationId = "NormalRadioButton",
+			Content = "RadioButton",
+			Style = radioButtonStyle,
+		};
+
+		verticalStackLayout.Children.Add(focusedRadioButton);
+		verticalStackLayout.Children.Add(normalRadioButton);
+
+		Content = verticalStackLayout;
+	}
+}

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue15806.cs

@@ -0,0 +1,22 @@
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues;
+
+internal class Issue15806 : _IssuesUITest
+{
+	public Issue15806(TestDevice device) : base(device) { }
+
+	public override string Issue => "RadioButton Border color not working for focused visual state";
+
+	[Test]
+	[Category(UITestCategories.RadioButton)]
+	public void ValidateRadioButtonBorderColor()
+	{
+		App.WaitForElement("FocusedRadioButton");
+		App.Tap("NormalRadioButton");
+		VerifyScreenshot();
+	}
+}
+