Implement Time property in WinUI TimePickerHandler

src/Compatibility/Core/src/Windows/TimePickerRenderer.cs

@@ -161,6 +161,7 @@ namespace Microsoft.Maui.Controls.Compatibility.Platform.UWP
 			_fontApplied = true;
 		}
 
+		[PortHandler]
 		void UpdateTime()
 		{
 			Control.Time = Element.Time;

src/Core/src/Handlers/TimePicker/TimePickerHandler.Windows.cs

@@ -1,16 +1,18 @@
-using System;
+using Microsoft.UI.Xaml.Controls;
 
 namespace Microsoft.Maui.Handlers
 {
-	public partial class TimePickerHandler : ViewHandler<ITimePicker, Microsoft.UI.Xaml.Controls.TimePicker>
+	public partial class TimePickerHandler : ViewHandler<ITimePicker, TimePicker>
 	{
-		protected override Microsoft.UI.Xaml.Controls.TimePicker CreateNativeView() => new Microsoft.UI.Xaml.Controls.TimePicker();
+		protected override TimePicker CreateNativeView() => new TimePicker();
 
 		[MissingMapper]
 		public static void MapFormat(TimePickerHandler handler, ITimePicker view) { }
 
-		[MissingMapper]
-		public static void MapTime(TimePickerHandler handler, ITimePicker view) { }
+		public static void MapTime(TimePickerHandler handler, ITimePicker timePicker)
+		{
+			handler.NativeView?.UpdateTime(timePicker);
+		}
 
 		[MissingMapper]
 		public static void MapCharacterSpacing(TimePickerHandler handler, ITimePicker view) { }

src/Core/src/Platform/Windows/TimePickerExtensions.cs

@@ -0,0 +1,21 @@
+using Microsoft.UI.Xaml.Controls;
+
+namespace Microsoft.Maui
+{
+	public static class TimePickerExtensions
+	{
+		public static void UpdateTime(this TimePicker nativeTimePicker, ITimePicker timePicker)
+		{
+			nativeTimePicker.Time = timePicker.Time;
+
+			if (timePicker.Format?.Contains('H') == true)
+			{
+				nativeTimePicker.ClockIdentifier = "24HourClock";
+			}
+			else
+			{
+				nativeTimePicker.ClockIdentifier = "12HourClock";
+			}
+		}
+	}
+}