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Update top-level-templates.md #26338

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40 changes: 38 additions & 2 deletions docs/core/tutorials/top-level-templates.md
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@@ -1,11 +1,11 @@
---
title: "C# template changes in .NET 6"
description: The C# console app template now uses top-level statements. Understand what's changed and how to use existing learning materials with the new syntax.
ms.date: 07/13/2021
ms.date: 10/01/2021
---
# New C# templates generate top-level statements

Starting with the .NET 6 Preview 7 SDK, the console app template generates the following code:
Starting with .NET 6, new projects using the `console` template generate different code than previous versions:

```csharp
// See https://aka.ms/new-console-template for more information
Expand Down Expand Up @@ -36,6 +36,8 @@ These two forms represent the same program. Both are valid with C# 10.0. When yo
- Use the new program style, adding new top-level statements as you add features.
- Convert the new program style to the older style, with a `Program` class and a `Main` method.

If you want to use the old templates, see the [Use the old program style](#use-the-old-program-style) section.

## Use the new program style

The features that make the new program simpler are *top-level statements*, *global `using` directives*, and *implicit `using` directives*.
Expand Down Expand Up @@ -77,3 +79,37 @@ You can also add a [`<Using>`](../project-sdk/msbuild-props.md#using) item in yo
<Using Remove="System.Net.Http" />
</ItemGroup>
```

## Use the old program style
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When the .NET 6 templates detect you're targeting .NET 5, template code generated is reverted to the old program style. To use the old program style, but still target .NET 6, use both the `--framework` and `--target-framework-override` parameters:

```dotnet
dotnet new console --framework net5.0 --target-framework-override net6.0
```

### Use the old program style in Visual Studio

When you create a new console project in Visual Studio, you're prompted with a dropdown box that identifies which target framework you want your project to target. Changing this from **.NET 6.0** to **.NET 5.0** and create the project as normal.

Next, in the **Project Explorer** pane, double-click on the project file, and change `<TargetFramework>net5.0</TargetFramework>` to `<TargetFramework>net6.0</TargetFramework>`.

Here's a file diff that illustrates the changes:

```diff
<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>
<OutputType>Exe</OutputType>
- <TargetFramework>net5.0</TargetFramework>
+ <TargetFramework>net6.0</TargetFramework>
<ImplicitUsings>enable</ImplicitUsings>
<Nullable>enable</Nullable>
</PropertyGroup>

</Project>
```

## Template feedback

The top-level template is a new feature in .NET 6.0. Add an up or down vote [GitHub issue #26313](https://github.com/dotnet/docs/issues/26313) to voice your support for this feature.