From 74fadd98edc7f37d3af366b0a5c7bb2a42007eb6 Mon Sep 17 00:00:00 2001
From: Luqun Lou <luqunl@users.noreply.github.com>
Date: Fri, 29 Jun 2018 09:24:45 -0700
Subject: [PATCH] Add public implementation CultureDataSupport
 (dotnet/coreclr#18691)

Commit migrated from https://github.com/dotnet/coreclr/commit/7acc7194a25cd3965c310cc94479f09f7f80714c
---
 .../src/System.Private.CoreLib/System.Private.CoreLib.csproj     | 2 +-
 .../src/Internal/Resources/WindowsRuntimeResourceManagerBase.cs  | 9 +++++++++
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/coreclr/src/System.Private.CoreLib/System.Private.CoreLib.csproj b/src/coreclr/src/System.Private.CoreLib/System.Private.CoreLib.csproj
index dbf4545..1d522cb 100644
--- a/src/coreclr/src/System.Private.CoreLib/System.Private.CoreLib.csproj
+++ b/src/coreclr/src/System.Private.CoreLib/System.Private.CoreLib.csproj
@@ -303,8 +303,8 @@
     <Compile Include="$(BclSourcesRoot)\Internal\Console.cs" />
     <Compile Condition="'$(FeatureCominterop)' == 'true'" Include="$(BclSourcesRoot)\Internal\Threading\Tasks\AsyncCausalitySupport.cs" />
     <Compile Condition="'$(FeatureCominterop)' == 'true'" Include="$(BclSourcesRoot)\Internal\Runtime\InteropServices\WindowsRuntime\ExceptionSupport.cs" />
-    <Compile Condition="'$(FeatureAppX)' == 'true'" Include="$(BclSourcesRoot)\Internal\Resources\WindowsRuntimeResourceManagerBase.cs" />
     <Compile Condition="'$(FeatureAppX)' == 'true'" Include="$(BclSourcesRoot)\Internal\Resources\PRIExceptionInfo.cs" />
+    <Compile Condition="'$(FeatureAppX)' == 'true'" Include="$(BclSourcesRoot)\Internal\Resources\WindowsRuntimeResourceManagerBase.cs" />
   </ItemGroup>
   <ItemGroup>
     <Compile Include="$(BclSourcesRoot)\System\Reflection\Assembly.CoreCLR.cs" />
diff --git a/src/coreclr/src/System.Private.CoreLib/src/Internal/Resources/WindowsRuntimeResourceManagerBase.cs b/src/coreclr/src/System.Private.CoreLib/src/Internal/Resources/WindowsRuntimeResourceManagerBase.cs
index ac18b20..6594ae6 100644
--- a/src/coreclr/src/System.Private.CoreLib/src/Internal/Resources/WindowsRuntimeResourceManagerBase.cs
+++ b/src/coreclr/src/System.Private.CoreLib/src/Internal/Resources/WindowsRuntimeResourceManagerBase.cs
@@ -21,5 +21,14 @@ namespace Internal.Resources
         }
 
         public abstract bool SetGlobalResourceContextDefaultCulture(CultureInfo ci);
+
+        /// <summary>
+        /// Check whether CultureData exists for specified cultureName
+        /// This API is used for WindowsRuntimeResourceManager in System.Runtime.WindowsRuntime
+        /// </summary>
+        public static bool IsValidCulture(string cultureName)
+        {
+            return CultureData.GetCultureData(cultureName, /* useUserOverride */ true) != null;
+        }
     }
 }
-- 
2.7.4