grpc/examples/csharp/Helloworld/GreeterClient/GreeterClient.csproj

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    <TargetFramework>netcoreapp3.1</TargetFramework>
    <OutputType>Exe</OutputType>
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    <ProjectReference Include="..\Greeter\Greeter.csproj" />
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Redo C# examples to use new Grpc.Tools * No pre-compilation of proto files required; * Tested under Windows and Linux dotnet and mono; * But not tested on Mac/mono; * README updated. 7 years ago			`<Project Sdk="Microsoft.NET.Sdk">`
update .NET core example to .csproj projects 8 years ago
			`<PropertyGroup>`
Update target frameworks in C# examples (#29047) * Update target frameworks in examples. * Update target frameworks and NuGets in examples. * upgrade Xds example Co-authored-by: Jan Tattermusch <jtattermusch@google.com> 3 years ago			`<TargetFramework>netcoreapp3.1</TargetFramework>`
update .NET core example to .csproj projects 8 years ago			`<OutputType>Exe</OutputType>`
			`</PropertyGroup>`

			`<ItemGroup>`
			`<ProjectReference Include="..\Greeter\Greeter.csproj" />`
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