Polishing C# math service implementation and added an in-process mathclient mathserver test
diff --git a/src/csharp/Grpc.sln b/src/csharp/Grpc.sln
index 5890617..c46c4d6 100644
--- a/src/csharp/Grpc.sln
+++ b/src/csharp/Grpc.sln
@@ -9,12 +9,18 @@
EndProject
Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "GrpcCoreTests", "GrpcCoreTests\GrpcCoreTests.csproj", "{86EC5CB4-4EA2-40A2-8057-86542A0353BB}"
EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "GrpcApiTests", "GrpcApiTests\GrpcApiTests.csproj", "{143B1C29-C442-4BE0-BF3F-A8F92288AC9F}"
+EndProject
Global
GlobalSection(SolutionConfigurationPlatforms) = preSolution
Debug|x86 = Debug|x86
Release|x86 = Release|x86
EndGlobalSection
GlobalSection(ProjectConfigurationPlatforms) = postSolution
+ {143B1C29-C442-4BE0-BF3F-A8F92288AC9F}.Debug|x86.ActiveCfg = Debug|Any CPU
+ {143B1C29-C442-4BE0-BF3F-A8F92288AC9F}.Debug|x86.Build.0 = Debug|Any CPU
+ {143B1C29-C442-4BE0-BF3F-A8F92288AC9F}.Release|x86.ActiveCfg = Release|Any CPU
+ {143B1C29-C442-4BE0-BF3F-A8F92288AC9F}.Release|x86.Build.0 = Release|Any CPU
{61ECB8EE-0C96-4F8E-B187-8E4D227417C0}.Debug|x86.ActiveCfg = Debug|x86
{61ECB8EE-0C96-4F8E-B187-8E4D227417C0}.Debug|x86.Build.0 = Debug|x86
{61ECB8EE-0C96-4F8E-B187-8E4D227417C0}.Release|x86.ActiveCfg = Release|x86