Add missing documentation for sln, buildprops, and buildtargets item templates (#48191)

Author: Copilot

docs/core/tools/dotnet-new-sdk-templates.md

@@ -3,9 +3,9 @@ title: .NET default templates for dotnet new
 description: The information about dotnet new templates shipped with dotnet SDK.
 ms.custom: updateeachrelease
 no-loc: [Blazor, WebAssembly]
-ms.date: 02/21/2024
+ms.date: 08/29/2025
 ---
-# .NET default templates for dotnet new
+# Default templates for `dotnet new`
 
 When you install the [.NET SDK](https://dotnet.microsoft.com/download), you receive over a dozen built-in templates for creating projects and files, including console apps, class libraries, unit test projects, ASP.NET Core apps (including [Angular](https://angular.io/) and [React](https://reactjs.org/) projects), and configuration files. To list the built-in templates, run the `dotnet new list` command:
 
@@ -19,7 +19,31 @@ dotnet new list
 
 Each template may have additional options available. To show the additional options available for the template use the `--help` option with the template name argument, for example: `dotnet new console --help`.
 In case the template supports multiple languages, this command will show help for the template in the default language. By combining it with the `--language` option, you can see the help for other languages: `dotnet new console --help --language F#`.
-The templates that ship with the .NET SDK have the following additional options:
+The templates that ship with the .NET SDK have additional options that are described in the following sections.
+
+## `buildprops`
+
+Creates a *Directory.Build.props* file for customizing MSBuild properties for an entire folder tree. For more information, see [Customize your build](/visualstudio/msbuild/customize-your-build).
+
+- **`--inherit`**
+
+  If specified, adds an Import element for the closest *Directory.Build.props* file in the parent directory hierarchy. By default, *Directory.Build.props* files don't inherit from parent directories, so enabling this option allows you to build up a hierarchy of customizations folder-by-folder.
+
+- **`--use-artifacts`**
+
+  If specified, adds a property to enable the artifacts output layout. This is a common pattern for projects that produce build artifacts, such as NuGet packages, that are placed in a common folder structure. For more information, see [Artifacts output layout](../sdk/artifacts-output.md).
+
+***
+
+## `buildtargets`
+
+Creates a *Directory.Build.targets* file for customizing MSBuild targets and tasks for an entire folder tree. For more information, see [Customize your build](/visualstudio/msbuild/customize-your-build).
+
+- **`--inherit`**
+
+  If specified, adds an Import element for the closest *Directory.Build.targets* file in the parent directory hierarchy. By default, *Directory.Build.targets* files don't inherit from parent directories, so enabling this option allows you to build up a hierarchy of customizations folder-by-folder.
+
+***
 
 ## `console`
 
@@ -901,6 +925,15 @@ API Controller with or without read/write actions.
   The roll-forward policy to use when selecting an SDK version, either as a fallback when a specific SDK version is missing or as a directive to use a later version.
   For more information, see [global-json](global-json.md#rollforward).
 
+## `sln`
+
+Creates an empty solution file containing no projects.
+
+> [!NOTE]
+> In .NET SDK 9.0.200 and later, this template supports a `--format` option to choose between `sln` and `slnx` formats. Starting with .NET 10, the default format is `slnx`.
+
+***
+
 ## `editorconfig`
 
 Creates an *.editorconfig* file for configuring code style preferences.

includes/templates.md

@@ -35,7 +35,9 @@ The following table shows the templates that come pre-installed with the .NET SD
 | NuGet Config                                 | `nugetconfig`                                                                       |              | Config                                | 1.0              |
 | Dotnet local tool manifest file              | `tool-manifest`                                                                     |              | Config                                | 3.0              |
 | Web Config                                   | `webconfig`                                                                         |              | Config                                | 1.0              |
-| Solution File                                | `sln`                                                                               |              | Solution                              | 1.0              |
+| Directory.Build.props file                   | [`buildprops`](../docs/core/tools/dotnet-new-sdk-templates.md#buildprops)          |              | Config                                | 8.0.100          |
+| Directory.Build.targets file                 | [`buildtargets`](../docs/core/tools/dotnet-new-sdk-templates.md#buildtargets)      |              | Config                                | 8.0.100          |
+| Solution File                                | [`sln`](../docs/core/tools/dotnet-new-sdk-templates.md#sln)                        |              | Solution                              | 1.0              |
 | Protocol Buffer File                         | [`proto`](../docs/core/tools/dotnet-new-sdk-templates.md#namespace)                 |              | Web/gRPC                              | 3.0              |
 | EditorConfig file                            | [`editorconfig`](../docs/core/tools/dotnet-new-sdk-templates.md#editorconfig)       |              | Config                                | 6.0              |