Adjusting select version section

Author: erhopf

articles/cognitive-services/Translator/quickstart-csharp-sentences.md

@@ -20,6 +20,7 @@ This quickstart requires an [Azure Cognitive Services account](https://docs.micr
 
 ## Prerequisites
 
+* C# 7.1 or later
 * [.NET SDK](https://www.microsoft.com/net/learn/dotnet/hello-world-tutorial)
 * [Json.NET NuGet Package](https://www.nuget.org/packages/Newtonsoft.Json/)
 * [Visual Studio](https://visualstudio.microsoft.com/downloads/), [Visual Studio Code](https://code.visualstudio.com/download), or your favorite text editor
@@ -42,6 +43,18 @@ Next, you'll need to install Json.Net. From your project's directory, run:
 dotnet add package Newtonsoft.Json --version 11.0.2
 ```
 
+## Select the C# language version
+
+This quickstart requires C# 7.1 or later. There are a few ways to change the C# version for your project. In this guide, we'll show you how to adjust the `sentences-sample.csproj` file. For all available options, such as changing the language in Visual Studio, see [Select the C# language version](https://docs.microsoft.com/dotnet/csharp/language-reference/configure-language-version).
+
+Open your project, then open `sentences-sample.csproj`. Make sure that `LangVersion` is set to 7.1 or later. If there isn't a property group for the language version, add these lines:
+
+```xml
+<PropertyGroup>
+   <LangVersion>7.1</LangVersion>
+</PropertyGroup>
+```
+
 ## Add required namespaces to your project
 
 The `dotnet new console` command that you ran earlier created a project, including `Program.cs`. This file is where you'll put your application code. Open `Program.cs`, and replace the existing using statements. These statements ensure that you have access to all the types required to build and run the sample app.

articles/cognitive-services/Translator/quickstart-csharp-translate.md

@@ -45,9 +45,9 @@ dotnet add package Newtonsoft.Json --version 11.0.2
 
 ## Select the C# language version
 
-This quickstart requires C# 7.1 or later. There are a few ways to change the C# version for your project. In this guide, we'll show you how to adjust the `tts-sample.csproj` file. For all available options, such as changing the language in Visual Studio, see [Select the C# language version](https://docs.microsoft.com/dotnet/csharp/language-reference/configure-language-version).
+This quickstart requires C# 7.1 or later. There are a few ways to change the C# version for your project. In this guide, we'll show you how to adjust the `translate-sample.csproj` file. For all available options, such as changing the language in Visual Studio, see [Select the C# language version](https://docs.microsoft.com/dotnet/csharp/language-reference/configure-language-version).
 
-Open your project, then open `tts-sample.csproj`. Make sure that `LangVersion` is set to 7.1 or later. If there isn't a property group for the language version, add these lines:
+Open your project, then open `translate-sample.csproj`. Make sure that `LangVersion` is set to 7.1 or later. If there isn't a property group for the language version, add these lines:
 
 ```xml
 <PropertyGroup>

articles/cognitive-services/Translator/quickstart-csharp-transliterate.md

@@ -45,9 +45,9 @@ dotnet add package Newtonsoft.Json --version 11.0.2
 
 ## Select the C# language version
 
-This quickstart requires C# 7.1 or later. There are a few ways to change the C# version for your project. In this guide, we'll show you how to adjust the `tts-sample.csproj` file. For all available options, such as changing the language in Visual Studio, see [Select the C# language version](https://docs.microsoft.com/dotnet/csharp/language-reference/configure-language-version).
+This quickstart requires C# 7.1 or later. There are a few ways to change the C# version for your project. In this guide, we'll show you how to adjust the `transliterate-sample.csproj` file. For all available options, such as changing the language in Visual Studio, see [Select the C# language version](https://docs.microsoft.com/dotnet/csharp/language-reference/configure-language-version).
 
-Open your project, then open `tts-sample.csproj`. Make sure that `LangVersion` is set to 7.1 or later. If there isn't a property group for the language version, add these lines:
+Open your project, then open `transliterate-sample.csproj`. Make sure that `LangVersion` is set to 7.1 or later. If there isn't a property group for the language version, add these lines:
 
 ```xml
 <PropertyGroup>