introduce common.props, set LangVersion to 7.2

src/csharp/Directory.Build.props

@@ -1,3 +1,4 @@
 <Project>
   <Import Project="build\dependencies.props" />
+  <Import Project="build\common.props" />
 </Project>

src/csharp/Directory.Build.targets

@@ -0,0 +1,9 @@
+<Project>
+  <!-- Needed for the net45 build to work on Unix. See https://github.com/dotnet/designs/pull/33 -->
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.0">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
+    </PackageReference>
+  </ItemGroup>
+</Project>

src/csharp/Grpc.Auth/Grpc.Auth.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <Authors>The gRPC Authors</Authors>
     <Copyright>Copyright 2015 The gRPC Authors</Copyright>

src/csharp/Grpc.Core.Api/Grpc.Core.Api.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <Authors>The gRPC Authors</Authors>
     <Copyright>Copyright 2019 The gRPC Authors</Copyright>

src/csharp/Grpc.Core.NativeDebug/Grpc.Core.NativeDebug.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <Authors>The gRPC Authors</Authors>
     <Copyright>Copyright 2015 The gRPC Authors</Copyright>

src/csharp/Grpc.Core.Testing/Grpc.Core.Testing.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <Authors>The gRPC Authors</Authors>
     <Description>Miscellaneous code for testing Grpc.Core</Description>

src/csharp/Grpc.Core.Tests/Grpc.Core.Tests.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <TargetFrameworks>net45;netcoreapp2.1</TargetFrameworks>
     <OutputType>Exe</OutputType>

src/csharp/Grpc.Core.Xamarin/Grpc.Core.Xamarin.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <Authors>The gRPC Authors</Authors>
     <Copyright>Copyright 2015 The gRPC Authors</Copyright>

src/csharp/Grpc.Core/Grpc.Core.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="Common.csproj.include" />
-
   <PropertyGroup>
     <Authors>The gRPC Authors</Authors>
     <Copyright>Copyright 2015 The gRPC Authors</Copyright>
@@ -23,10 +20,6 @@
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
   </PropertyGroup>
 
-  <PropertyGroup>
-    <LangVersion>7.2</LangVersion>
-  </PropertyGroup>
-
   <ItemGroup>
     <Compile Include="..\Grpc.Core.Api\Version.cs" />
   </ItemGroup>

src/csharp/Grpc.Examples.MathClient/Grpc.Examples.MathClient.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <TargetFrameworks>net45;netcoreapp2.1</TargetFrameworks>
     <OutputType>Exe</OutputType>

src/csharp/Grpc.Examples.MathServer/Grpc.Examples.MathServer.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <TargetFrameworks>net45;netcoreapp2.1</TargetFrameworks>
     <OutputType>Exe</OutputType>

src/csharp/Grpc.Examples.Tests/Grpc.Examples.Tests.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <TargetFrameworks>net45;netcoreapp2.1</TargetFrameworks>
     <OutputType>Exe</OutputType>

src/csharp/Grpc.Examples/Grpc.Examples.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <TargetFrameworks>net45;netcoreapp2.1</TargetFrameworks>
     <TreatWarningsAsErrors>true</TreatWarningsAsErrors>

src/csharp/Grpc.HealthCheck.Tests/Grpc.HealthCheck.Tests.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <TargetFrameworks>net45;netcoreapp2.1</TargetFrameworks>
     <OutputType>Exe</OutputType>

src/csharp/Grpc.HealthCheck/Grpc.HealthCheck.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <Authors>The gRPC Authors</Authors>
     <Copyright>Copyright 2015 The gRPC Authors</Copyright>

src/csharp/Grpc.IntegrationTesting.Client/Grpc.IntegrationTesting.Client.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <TargetFrameworks>net45;netcoreapp2.1</TargetFrameworks>
     <OutputType>Exe</OutputType>

src/csharp/Grpc.IntegrationTesting.QpsWorker/Grpc.IntegrationTesting.QpsWorker.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <TargetFrameworks>net45;netcoreapp2.1</TargetFrameworks>
     <OutputType>Exe</OutputType>

src/csharp/Grpc.IntegrationTesting.Server/Grpc.IntegrationTesting.Server.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <TargetFrameworks>net45;netcoreapp2.1</TargetFrameworks>
     <OutputType>Exe</OutputType>

src/csharp/Grpc.IntegrationTesting.StressClient/Grpc.IntegrationTesting.StressClient.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <TargetFrameworks>net45;netcoreapp2.1</TargetFrameworks>
     <OutputType>Exe</OutputType>

src/csharp/Grpc.IntegrationTesting.XdsClient/Grpc.IntegrationTesting.XdsClient.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <TargetFrameworks>net45;netcoreapp2.1</TargetFrameworks>
     <OutputType>Exe</OutputType>

src/csharp/Grpc.IntegrationTesting/Grpc.IntegrationTesting.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <TargetFrameworks>net45;netcoreapp2.1</TargetFrameworks>
     <OutputType>Exe</OutputType>

src/csharp/Grpc.Microbenchmarks/Grpc.Microbenchmarks.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <TargetFrameworks>net461;netcoreapp2.1</TargetFrameworks>
     <OutputType>Exe</OutputType>

src/csharp/Grpc.Reflection.Tests/Grpc.Reflection.Tests.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <TargetFrameworks>net45;netcoreapp2.1</TargetFrameworks>
     <OutputType>Exe</OutputType>

src/csharp/Grpc.Reflection/Grpc.Reflection.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <Authors>The gRPC Authors</Authors>
     <Copyright>Copyright 2016 The gRPC Authors</Copyright>

src/csharp/Grpc.Tools.Tests/Grpc.Tools.Tests.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <TargetFrameworks>net45;netcoreapp2.1</TargetFrameworks>
     <OutputType>Exe</OutputType>

src/csharp/Grpc.Tools/Grpc.Tools.csproj

@@ -1,7 +1,4 @@
 <Project Sdk="Microsoft.NET.Sdk" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-
-  <Import Project="..\Grpc.Core\Common.csproj.include" />
-
   <PropertyGroup>
     <AssemblyName>Protobuf.MSBuild</AssemblyName>
     <VersionPrefix>$(GrpcCsharpVersion)</VersionPrefix>

src/csharp/Grpc.Core/Common.csproj.include → src/csharp/build/common.props

@@ -19,11 +19,8 @@
     <PublicSign Condition=" '$(OS)' != 'Windows_NT' ">true</PublicSign>
   </PropertyGroup>
 
-  <!-- Needed for the net45 build to work on Unix. See https://github.com/dotnet/designs/pull/33 -->
-  <ItemGroup>
-    <PackageReference Include="Microsoft.NETFramework.ReferenceAssemblies" Version="1.0.0">
-      <PrivateAssets>all</PrivateAssets>
-      <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
-    </PackageReference>
-  </ItemGroup>
+  <PropertyGroup>
+    <LangVersion>7.2</LangVersion>
+  </PropertyGroup>
 </Project>
+