C# pages: repurpose non-quick-start page into a "gRPC for .NET" page (#244)

* Initial revision

* Create separate dotnet page

* Simplify the C# section page

content/docs/languages/csharp/_index.md

@@ -2,8 +2,13 @@
 title: C#
 ---
 
-These language-specific pages are available:
+There are two official implementations of gRPC for C#. The original [gRPC
+core-library][core-library] implementation is covered here:
 
 - [Quick start](quickstart)
-- [Quick Start using `grpc-dotnet`](quickstart-dotnet)
 - [Basics tutorial](basics)
+
+For details concerning the newer gRPC for .NET implementation, see [gRPC for
+.NET](dotnet).
+
+[core-library]: https://github.com/grpc/grpc/tree/master/src/csharp

content/docs/languages/csharp/dotnet.md

@@ -0,0 +1,21 @@
+---
+title: gRPC for .NET
+---
+
+For an introduction to gRPC for .NET ([grpc-dotnet][]) and a basic tutorial, see
+the following pages:
+
+- [Introduction to gRPC on .NET Core](https://docs.microsoft.com/aspnet/core/grpc)
+- [Tutorial: Create a gRPC client and server in ASP.NET Core][tutorial]
+
+Several sample applications are available from the [examples][] folder in the
+[grpc-dotnet][] repository.
+
+{{< note >}}
+  Looking for gRPC C# core-library documentation?
+  See the [gRPC C# main page](..).
+{{< /note >}}
+
+[examples]: https://github.com/grpc/grpc-dotnet/tree/master/examples
+[grpc-dotnet]: https://github.com/grpc/grpc-dotnet
+[tutorial]: https://docs.microsoft.com/aspnet/core/tutorials/grpc/grpc-start

content/docs/languages/csharp/quickstart-dotnet.md

@@ -1,21 +0,0 @@
----
-title: Quick Start using grpc-dotnet
-description: This guide gets you started with gRPC for .NET with a simple working example.
-weight: 2
----
-
-{{< note >}}
-This is a quick start guide for the "grpc-dotnet" implementation of gRPC C#s. See [gRPC C# Quick Start](../csharp) for how to start with the gRPC C# implementation based on native Core library.
-{{< /note >}}
-
-### General project info
-
-See https://github.com/grpc/grpc-dotnet for general info about the "gRPC for .NET" project.
-
-### gRPC ASP.NET Core Tutorial
-
-The best way to start is the [gRPC ASP.NET Core Tutorial](https://docs.microsoft.com/aspnet/core/tutorials/grpc/grpc-start). See the [gRPC documentation](https://docs.microsoft.com/aspnet/core/grpc) section in ASP.NET Core's documentation for a more thorough overview.
-
-### More Examples
-
-More code examples for grpc-dotnet are at [https://github.com/grpc/grpc-dotnet/tree/master/examples](https://github.com/grpc/grpc-dotnet/tree/master/examples).

content/docs/languages/csharp/quickstart.md

@@ -5,7 +5,10 @@ weight: 1
 ---
 
 {{< note >}}
-This is a quick start guide for the gRPC C# implementation based on Core native library. See [gRPC for .NET Quick Start](..//csharp-dotnet/) for how to start with the "grpc-dotnet" implementation.
+  This page uses the [gRPC C# core-library][core-library] implementation. For
+  documentation covering gRPC for .NET, see [gRPC for .NET](../dotnet).
+
+  [core-library]: https://github.com/grpc/grpc/tree/master/src/csharp
 {{< /note >}}
 
 ### Prerequisites

layouts/index.redirects

@@ -1,4 +1,5 @@
-/docs/quickstart/csharp-dotnet            /docs/languages/csharp/quickstart-dotnet
+/docs/languages/csharp/quickstart-dotnet  /docs/languages/csharp/dotnet
+/docs/quickstart/csharp-dotnet            /docs/languages/csharp/dotnet
 /docs/tutorials/async/helloasync-cpp      /docs/languages/cpp/async
 /docs/tutorials/auth/oauth2-objective-c   /docs/languages/objective-c/oauth2