Extract WindowsVersionHelper to single location to not spread (and miss) instances of #if NET472

ILSpy/AboutPage.cs

@@ -35,8 +35,6 @@ using ICSharpCode.Decompiler;
 using ICSharpCode.ILSpy.Properties;
 using ICSharpCode.ILSpy.TextView;
 
-using OSVersionHelper;
-
 namespace ICSharpCode.ILSpy
 {
 	[ExportMainMenuCommand(Menu = nameof(Resources._Help), Header = nameof(Resources._About), MenuOrder = 99999)]
@@ -62,13 +60,10 @@ namespace ICSharpCode.ILSpy
 				EnableHyperlinks = true
 			};
 			output.WriteLine(Resources.ILSpyVersion + RevisionClass.FullVersion);
-			bool hasPackageIdentity = false;
-#if NET472
-			hasPackageIdentity = WindowsVersionHelper.HasPackageIdentity;
-#endif
-			if (hasPackageIdentity)
+
+			if (StorePackageHelper.HasPackageIdentity)
 			{
-				output.WriteLine($"Package Name: {WindowsVersionHelper.GetPackageFamilyName()}");
+				output.WriteLine($"Package Name: {StorePackageHelper.GetPackageFamilyName()}");
 			}
 			else
 			{// if we're running in an MSIX, updates work differently
@@ -304,7 +299,7 @@ namespace ICSharpCode.ILSpy
 			UpdateSettings s = new UpdateSettings(spySettings);
 
 			// If we're in an MSIX package, updates work differently
-			if (s.AutomaticUpdateCheckEnabled && !WindowsVersionHelper.HasPackageIdentity)
+			if (s.AutomaticUpdateCheckEnabled && !StorePackageHelper.HasPackageIdentity)
 			{
 				// perform update check if we never did one before;
 				// or if the last check wasn't in the past 7 days

ILSpy/Commands/CheckForUpdatesCommand.cs

@@ -19,8 +19,6 @@
 
 using ICSharpCode.ILSpy.Properties;
 
-using OSVersionHelper;
-
 namespace ICSharpCode.ILSpy
 {
 	[ExportMainMenuCommand(Menu = nameof(Resources._Help), Header = nameof(Resources._CheckUpdates), MenuOrder = 5000)]
@@ -28,12 +26,11 @@ namespace ICSharpCode.ILSpy
 	{
 		public override bool CanExecute(object parameter)
 		{
-#if NET472
-			if (WindowsVersionHelper.HasPackageIdentity)
+			if (StorePackageHelper.HasPackageIdentity)
 			{
 				return false;
 			}
-#endif
+
 			return base.CanExecute(parameter);
 		}
 

ILSpy/MainWindow.xaml.cs

@@ -52,8 +52,6 @@ using ICSharpCode.TreeView;
 
 using Microsoft.Win32;
 
-using OSVersionHelper;
-
 namespace ICSharpCode.ILSpy
 {
 	class MainWindowDataContext
@@ -678,13 +676,12 @@ namespace ICSharpCode.ILSpy
 
 		public async Task ShowMessageIfUpdatesAvailableAsync(ILSpySettings spySettings, bool forceCheck = false)
 		{
-#if NET472
 			// Don't check for updates if we're in an MSIX since they work differently
-			if (WindowsVersionHelper.HasPackageIdentity)
+			if (StorePackageHelper.HasPackageIdentity)
 			{
 				return;
 			}
-#endif
+
 			string downloadUrl;
 			if (forceCheck)
 			{

ILSpy/StorePackageHelper.cs

@@ -0,0 +1,24 @@
+using OSVersionHelper;
+
+namespace ICSharpCode.ILSpy
+{
+	// The Store package is ever only built for net472
+	public static class StorePackageHelper
+	{
+		public static bool HasPackageIdentity {
+			get {
+#if NET472
+				return WindowsVersionHelper.HasPackageIdentity;
+#endif
+				return false;
+			}
+		}
+		public static string GetPackageFamilyName()
+		{
+#if NET472
+			return WindowsVersionHelper.GetPackageFamilyName();
+#endif
+			return "";
+		}
+	}
+}