Add a C# runtime component to the test solution.

nuget/Microsoft.Windows.CppWinRT.targets

@@ -278,7 +278,9 @@ Copyright (C) Microsoft Corporation. All rights reserved.
             <!--Get dynamic library project references-->
             <_CppWinRTDynamicProjectReferences Remove="@(_CppWinRTDynamicProjectReferences)"/>
             <_CppWinRTDynamicProjectReferences Include="@(_ResolvedProjectReferencePaths)"
-                Condition= "'%(_ResolvedProjectReferencePaths.ProjectType)'!='StaticLibrary'  AND '%(_ResolvedProjectReferencePaths.WinMDFile)' == 'true'"/>
+                Condition= "'%(_ResolvedProjectReferencePaths.ProjectType)'!='StaticLibrary' AND 
+                ('%(_ResolvedProjectReferencePaths.WinMDFile)' == 'true' OR
+                    ('%(_ResolvedProjectReferencePaths.WinMDFile)' == '' AND '%(_ResolvedProjectReferencePaths.Extension)' == '.winmd'))"/>
         </ItemGroup>
         <ItemGroup>
             <CppWinRTStaticProjectWinMDReferences Remove="@(CppWinRTStaticProjectWinMDReferences)" />

test/nuget/NuGetTest.sln

@@ -35,6 +35,8 @@ Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "TestStaticLibrary5", "TestS
 EndProject
 Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "TestStaticLibrary6", "TestStaticLibrary6\TestStaticLibrary6.vcxproj", "{DC435C3F-C38E-43D1-B702-DC03F530A3DD}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TestRuntimeComponentCSharp", "TestRuntimeComponentCSharp\TestRuntimeComponentCSharp.csproj", "{C47F8562-A2B9-4BA3-87AC-B42D015E241D}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|ARM = Debug|ARM
@@ -219,6 +221,22 @@ Global
 		{DC435C3F-C38E-43D1-B702-DC03F530A3DD}.Release|x64.Build.0 = Release|x64
 		{DC435C3F-C38E-43D1-B702-DC03F530A3DD}.Release|x86.ActiveCfg = Release|Win32
 		{DC435C3F-C38E-43D1-B702-DC03F530A3DD}.Release|x86.Build.0 = Release|Win32
+		{C47F8562-A2B9-4BA3-87AC-B42D015E241D}.Debug|ARM.ActiveCfg = Debug|ARM
+		{C47F8562-A2B9-4BA3-87AC-B42D015E241D}.Debug|ARM.Build.0 = Debug|ARM
+		{C47F8562-A2B9-4BA3-87AC-B42D015E241D}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{C47F8562-A2B9-4BA3-87AC-B42D015E241D}.Debug|ARM64.Build.0 = Debug|ARM64
+		{C47F8562-A2B9-4BA3-87AC-B42D015E241D}.Debug|x64.ActiveCfg = Debug|x64
+		{C47F8562-A2B9-4BA3-87AC-B42D015E241D}.Debug|x64.Build.0 = Debug|x64
+		{C47F8562-A2B9-4BA3-87AC-B42D015E241D}.Debug|x86.ActiveCfg = Debug|x86
+		{C47F8562-A2B9-4BA3-87AC-B42D015E241D}.Debug|x86.Build.0 = Debug|x86
+		{C47F8562-A2B9-4BA3-87AC-B42D015E241D}.Release|ARM.ActiveCfg = Release|ARM
+		{C47F8562-A2B9-4BA3-87AC-B42D015E241D}.Release|ARM.Build.0 = Release|ARM
+		{C47F8562-A2B9-4BA3-87AC-B42D015E241D}.Release|ARM64.ActiveCfg = Release|ARM64
+		{C47F8562-A2B9-4BA3-87AC-B42D015E241D}.Release|ARM64.Build.0 = Release|ARM64
+		{C47F8562-A2B9-4BA3-87AC-B42D015E241D}.Release|x64.ActiveCfg = Release|x64
+		{C47F8562-A2B9-4BA3-87AC-B42D015E241D}.Release|x64.Build.0 = Release|x64
+		{C47F8562-A2B9-4BA3-87AC-B42D015E241D}.Release|x86.ActiveCfg = Release|x86
+		{C47F8562-A2B9-4BA3-87AC-B42D015E241D}.Release|x86.Build.0 = Release|x86
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

test/nuget/TestApp/TestApp.vcxproj

@@ -78,7 +78,8 @@
       <AdditionalOptions>%(AdditionalOptions) /bigobj</AdditionalOptions>
       <!--Temporarily disable cppwinrt heap enforcement to work around xaml compiler generated std::shared_ptr use -->
       <AdditionalOptions Condition="'$(CppWinRTHeapEnforcement)'==''">/DWINRT_NO_MAKE_DETECTION %(AdditionalOptions)</AdditionalOptions>
-      <DisableSpecificWarnings></DisableSpecificWarnings>
+      <DisableSpecificWarnings>
+      </DisableSpecificWarnings>
     </ClCompile>
   </ItemDefinitionGroup>
   <ItemDefinitionGroup Condition="'$(Configuration)'=='Debug'">
@@ -155,6 +156,9 @@
     <ProjectReference Include="..\TestRuntimeComponent2\TestRuntimeComponent2.vcxproj">
       <Project>{4bbb2de7-4596-4da6-a923-e65e838363b5}</Project>
     </ProjectReference>
+    <ProjectReference Include="..\TestRuntimeComponentCSharp\TestRuntimeComponentCSharp.csproj">
+      <Project>{c47f8562-a2b9-4ba3-87ac-b42d015e241d}</Project>
+    </ProjectReference>
     <ProjectReference Include="..\TestRuntimeComponentCX\TestRuntimeComponentCX.vcxproj">
       <Project>{adc53200-b456-4386-9851-5bf69dfb8928}</Project>
     </ProjectReference>

test/nuget/TestRuntimeComponent3/TestRuntimeComponent3.vcxproj

@@ -132,6 +132,9 @@
     </Text>
   </ItemGroup>
   <ItemGroup>
+    <ProjectReference Include="..\TestRuntimeComponentCSharp\TestRuntimeComponentCSharp.csproj">
+      <Project>{c47f8562-a2b9-4ba3-87ac-b42d015e241d}</Project>
+    </ProjectReference>
     <ProjectReference Include="..\TestStaticLibrary3\TestStaticLibrary3.vcxproj">
       <Project>{1350e626-038b-4bdf-8e1d-c751ef33d90f}</Project>
     </ProjectReference>

test/nuget/TestRuntimeComponent3/TestRuntimeComponent3Class.cpp

@@ -2,11 +2,16 @@
 #include "TestRuntimeComponent3Class.h"
 #include "TestRuntimeComponent3Class.g.cpp"
 
+using namespace winrt::TestRuntimeComponentCSharp;
+
 namespace winrt::TestRuntimeComponent3::implementation
 {
     void TestRuntimeComponent3Class::Test()
     {
         TestStaticLibrary3Class c{};
         c.Test();
+
+        TestRuntimeComponentCSharpClass csharp{};
+        csharp.Test();
     }
 }

test/nuget/TestRuntimeComponent3/pch.h

@@ -2,3 +2,5 @@
 #include <unknwn.h>
 #include <winrt/Windows.Foundation.h>
 #include <winrt/Windows.Foundation.Collections.h>
+
+#include <winrt/TestRuntimeComponentCSharp.h>

test/nuget/TestRuntimeComponentCSharp/Properties/AssemblyInfo.cs

@@ -0,0 +1,29 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("RuntimeComponentCSharp")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("RuntimeComponentCSharp")]
+[assembly: AssemblyCopyright("Copyright ©  2019")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers 
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: ComVisible(false)]

test/nuget/TestRuntimeComponentCSharp/TestRuntimeComponentCSharp.csproj

@@ -0,0 +1,143 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{C47F8562-A2B9-4BA3-87AC-B42D015E241D}</ProjectGuid>
+    <OutputType>winmdobj</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>TestRuntimeComponentCSharp</RootNamespace>
+    <AssemblyName>TestRuntimeComponentCSharp</AssemblyName>
+    <DefaultLanguage>en-US</DefaultLanguage>
+    <TargetPlatformIdentifier>UAP</TargetPlatformIdentifier>
+    <TargetPlatformVersion Condition=" '$(TargetPlatformVersion)' == '' ">10.0.18362.0</TargetPlatformVersion>
+    <TargetPlatformMinVersion>10.0.15063.0</TargetPlatformMinVersion>
+    <MinimumVisualStudioVersion>14</MinimumVisualStudioVersion>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{A5A43C5B-DE2A-4C0C-9213-0A381AF9435A};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <AllowCrossPlatformRetargeting>false</AllowCrossPlatformRetargeting>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
+    <PlatformTarget>x86</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x86\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x86'">
+    <PlatformTarget>x86</PlatformTarget>
+    <OutputPath>bin\x86\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|ARM'">
+    <PlatformTarget>ARM</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\ARM\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|ARM'">
+    <PlatformTarget>ARM</PlatformTarget>
+    <OutputPath>bin\ARM\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|ARM64'">
+    <PlatformTarget>ARM64</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\ARM64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|ARM64'">
+    <PlatformTarget>ARM64</PlatformTarget>
+    <OutputPath>bin\ARM64\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+    <PlatformTarget>x64</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+    <PlatformTarget>x64</PlatformTarget>
+    <OutputPath>bin\x64\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+  </PropertyGroup>
+  <PropertyGroup>
+    <RestoreProjectStyle>PackageReference</RestoreProjectStyle>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="TestRuntimeComponentCSharpClass.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
+      <Version>5.4.7</Version>
+    </PackageReference>
+  </ItemGroup>
+  <PropertyGroup Condition=" '$(VisualStudioVersion)' == '' or '$(VisualStudioVersion)' &lt; '14.0' ">
+    <VisualStudioVersion>14.0</VisualStudioVersion>
+  </PropertyGroup>
+  <Import Project="$(MSBuildExtensionsPath)\Microsoft\WindowsXaml\v$(VisualStudioVersion)\Microsoft.Windows.UI.Xaml.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>

test/nuget/TestRuntimeComponentCSharp/TestRuntimeComponentCSharpClass.cs

@@ -0,0 +1,15 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace TestRuntimeComponentCSharp
+{
+    public sealed class TestRuntimeComponentCSharpClass
+    {
+        public void Test()
+        {
+        }
+    }
+}