[Windows] Fix Narrator announcing ContentView children twice when Description is set

src/Controls/tests/DeviceTests/Elements/ContentView/ContentViewTests.Windows.cs

@@ -1,5 +1,10 @@
-using Microsoft.Maui.Handlers;
+using System.Threading.Tasks;
+using Microsoft.Maui.Controls;
+using Microsoft.Maui.Handlers;
 using Microsoft.Maui.Platform;
+using Microsoft.UI.Xaml.Automation;
+using Microsoft.UI.Xaml.Automation.Peers;
+using Xunit;
 
 namespace Microsoft.Maui.DeviceTests
 {
@@ -17,5 +22,85 @@ static int GetContentChildCount(ContentViewHandler contentViewHandler)
 			else
 				return 0;
 		}
+
+		static FrameworkElementAutomationPeer GetOrCreateAutomationPeer(ContentPanel contentPanel)
+		{
+			var peer = FrameworkElementAutomationPeer.FromElement(contentPanel);
+
+			if (peer == null)
+			{
+				peer = FrameworkElementAutomationPeer.CreatePeerForElement(contentPanel);
+			}
+
+			return (FrameworkElementAutomationPeer)peer;
+		}
+
+		[Fact(DisplayName = "ContentView With Description Prevents Duplicate Narrator Announcements")]
+		public async Task ContentViewWithDescriptionHidesChildrenFromNarrator()
+		{
+			SetupBuilder();
+
+			var label = new Label { Text = "Child Label Text" };
+			var contentView = new ContentView { Content = label };
+			SemanticProperties.SetDescription(contentView, "ContentView Description");
+
+			await CreateHandlerAndAddToWindow<ContentViewHandler>(contentView, async (handler) =>
+			{
+				var contentPanel = handler.PlatformView as ContentPanel;
+				Assert.NotNull(contentPanel);
+
+				// Call UpdateSemantics manually because handler.UpdateValue uses handler.VirtualView
+				// which doesn't have Semantics populated in the test context
+				var view = contentView as IView;
+				contentPanel.UpdateSemantics(view);
+
+				var peer = GetOrCreateAutomationPeer(contentPanel);
+				Assert.NotNull(peer);
+
+				var name = Microsoft.UI.Xaml.Automation.AutomationProperties.GetName(contentPanel);
+				Assert.Equal("ContentView Description", name);
+
+				// ControlType should be Text (not Group) to prevent Narrator from saying "group"
+				var controlType = peer.GetAutomationControlType();
+				Assert.Equal(AutomationControlType.Text, controlType);
+
+				// Children should be hidden to prevent duplicate announcements
+				var children = peer.GetChildren();
+				Assert.Null(children);
+
+				// LocalizedControlType should be empty to prevent suffix
+				var localizedControlType = peer.GetLocalizedControlType();
+				Assert.Equal(string.Empty, localizedControlType);
+
+				await Task.CompletedTask;
+			});
+		}
+
+		[Fact(DisplayName = "ContentView Without Description Shows Children Normally")]
+		public async Task ContentViewWithoutDescriptionShowsChildren()
+		{
+			SetupBuilder();
+
+			var label = new Label { Text = "Child Label Text" };
+			var contentView = new ContentView { Content = label };
+
+			await CreateHandlerAndAddToWindow<ContentViewHandler>(contentView, async (handler) =>
+			{
+				var contentPanel = handler.PlatformView as ContentPanel;
+				Assert.NotNull(contentPanel);
+
+				var peer = GetOrCreateAutomationPeer(contentPanel);
+				Assert.NotNull(peer);
+
+				var controlType = peer.GetAutomationControlType();
+				Assert.Equal(AutomationControlType.Custom, controlType);
+
+				var children = peer.GetChildren();
+				Assert.NotNull(children);
+				Assert.NotEmpty(children);
+
+				await Task.CompletedTask;
+			});
+		}
 	}
 }

src/Core/src/Platform/Windows/ContentPanel.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Collections.Generic;
 using System.Numerics;
 using Microsoft.Graphics.Canvas;
 using Microsoft.Maui.Graphics;
@@ -9,6 +10,8 @@
 #endif
 using Microsoft.UI.Composition;
 using Microsoft.UI.Xaml;
+using Microsoft.UI.Xaml.Automation;
+using Microsoft.UI.Xaml.Automation.Peers;
 using Microsoft.UI.Xaml.Hosting;
 using Microsoft.UI.Xaml.Shapes;
 
@@ -73,6 +76,25 @@ public ContentPanel()
 			SizeChanged += ContentPanelSizeChanged;
 		}
 
+	// Custom automation peer prevents duplicate announcements when AutomationProperties.Name is set
+	protected override AutomationPeer OnCreateAutomationPeer() => new ContentPanelAutomationPeer(this);
+
+	partial class ContentPanelAutomationPeer : FrameworkElementAutomationPeer
+	{
+		internal ContentPanelAutomationPeer(ContentPanel owner) : base(owner) { }
+
+		bool HasDescription => !string.IsNullOrWhiteSpace(AutomationProperties.GetName(Owner));
+
+		protected override AutomationControlType GetAutomationControlTypeCore() =>
+			HasDescription ? AutomationControlType.Text : AutomationControlType.Custom;
+
+		protected override string GetLocalizedControlTypeCore() =>
+			HasDescription ? string.Empty : base.GetLocalizedControlTypeCore() ?? string.Empty;
+
+		protected override IList<AutomationPeer>? GetChildrenCore() =>
+			HasDescription ? null : base.GetChildrenCore();
+	}
+
 		void ContentPanelSizeChanged(object sender, SizeChangedEventArgs e)
 		{
 			if (_borderPath is null)

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

@@ -1 +1,2 @@
 #nullable enable
+override Microsoft.Maui.Platform.ContentPanel.OnCreateAutomationPeer() -> Microsoft.UI.Xaml.Automation.Peers.AutomationPeer!