From 02f54a52c16e074a2f54cc7c12715620ca3d9ff3 Mon Sep 17 00:00:00 2001
From: Ryland <41491307+ryalanms@users.noreply.github.com>
Date: Tue, 20 Jul 2021 12:52:51 -0700
Subject: [PATCH] Use preview language version for WPF

---
 eng/WpfArcadeSdk/Sdk/Sdk.props                                  | 2 +-
 .../src/Common/src/System/AppContextDefaultValues.cs            | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/eng/WpfArcadeSdk/Sdk/Sdk.props b/eng/WpfArcadeSdk/Sdk/Sdk.props
index 2c86e4c285c..2c72d3fa24b 100644
--- a/eng/WpfArcadeSdk/Sdk/Sdk.props
+++ b/eng/WpfArcadeSdk/Sdk/Sdk.props
@@ -14,7 +14,7 @@
 
   <PropertyGroup>
     <GenXmlStringTable>$(WpfArcadeSdkToolsDir)GenXmlStringTable.pl</GenXmlStringTable>
-    <LangVersion Condition="'$(LangVersion)'==''">8.0</LangVersion>
+    <LangVersion Condition="'$(LangVersion)'==''">preview</LangVersion>
     <CLSCompliant Condition="'$(CLSCompliant)'==''">true</CLSCompliant>
     <IncludeDllSafeSearchPathAttribute Condition="'$(IncludeDllSafeSearchPathAttribute )'==''">true</IncludeDllSafeSearchPathAttribute>
 
diff --git a/src/Microsoft.DotNet.Wpf/src/Common/src/System/AppContextDefaultValues.cs b/src/Microsoft.DotNet.Wpf/src/Common/src/System/AppContextDefaultValues.cs
index 690e33084a0..81a5baec8e3 100644
--- a/src/Microsoft.DotNet.Wpf/src/Common/src/System/AppContextDefaultValues.cs
+++ b/src/Microsoft.DotNet.Wpf/src/Common/src/System/AppContextDefaultValues.cs
@@ -204,7 +204,7 @@ private static bool TryParseFrameworkName(String frameworkName, out String ident
 
         /// This is a partial method. This method is responsible for populating the default values based on a TFM.
         /// It is partial because each library should define this method in their code to contain their defaults.
-        static partial void PopulateDefaultValuesPartial(string platformIdentifier, string profile, int version);
+        static partial void PopulateDefaultValuesPartial(string platformIdentifier, string profile, int targetFrameworkVersion);
     }
 }