Uwp retarget to 17763 / 1809

src/CommunityToolkit/Xamarin.CommunityToolkit/Views/Popup/UWP/PopupRenderer.uwp.cs

@@ -7,6 +7,7 @@
 using Xamarin.Forms;
 using Xamarin.Forms.Internals;
 using Xamarin.Forms.Platform.UWP;
+using ApiInformation = Windows.Foundation.Metadata.ApiInformation;
 using Specific = Xamarin.CommunityToolkit.PlatformConfiguration.WindowsSpecific.PopUp;
 using UWPThickness = Windows.UI.Xaml.Thickness;
 using XamlStyle = Windows.UI.Xaml.Style;
@@ -176,10 +177,11 @@ void SetColor()
 
 			flyoutStyle.Setters.Add(new Windows.UI.Xaml.Setter(FlyoutPresenter.BackgroundProperty, Element.Color.ToWindowsColor()));
 
-#if UWP_18362
 			if (Element.Color == Color.Transparent)
-				flyoutStyle.Setters.Add(new Windows.UI.Xaml.Setter(FlyoutPresenter.IsDefaultShadowEnabledProperty, false));
-#endif
+			{
+				if (ApiInformation.IsPropertyPresent(typeof(FlyoutPresenter).FullName, nameof(FlyoutPresenter.IsDefaultShadowEnabledProperty)))
+					flyoutStyle.Setters.Add(new Windows.UI.Xaml.Setter(FlyoutPresenter.IsDefaultShadowEnabledProperty, false));
+			}
 		}
 
 		void ApplyStyles()

src/CommunityToolkit/Xamarin.CommunityToolkit/Xamarin.CommunityToolkit.csproj

@@ -2,7 +2,8 @@
 <Project Sdk="MSBuild.Sdk.Extras/2.1.2">
   <PropertyGroup>
     <TargetFrameworks>netstandard1.0;netstandard2.0;netstandard2.1;Xamarin.iOS10;MonoAndroid10.0;Xamarin.TVOS10;Xamarin.WatchOS10;Xamarin.Mac20;tizen40</TargetFrameworks>
-    <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT' ">$(TargetFrameworks);uap10.0.19041;netcoreapp3.1;net472;net471</TargetFrameworks>
+    <TargetFrameworks Condition=" '$(OS)' == 'Windows_NT' ">$(TargetFrameworks);uap10.0.17763;netcoreapp3.1;net472;net471</TargetFrameworks>
+    <TargetPlatformVersion Condition="'$(TargetFramework)' == 'uap10.0.17763'">10.0.19041.0</TargetPlatformVersion>   
     <AssemblyName>Xamarin.CommunityToolkit</AssemblyName>
     <RootNamespace>Xamarin.CommunityToolkit</RootNamespace>
     <PackageId>Xamarin.CommunityToolkit</PackageId>