Skip to content

Document #:include support in file-based apps #53350

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
Copilot wants to merge 9 commits into
base: main
Choose a base branch
from
+15 −2
Open

Document #:include support in file-based apps #53350

Changes from all commits
Commits
Show all changes
9 commits
Select commit Hold shift + click to select a range
d8ea0eb
Initial plan
Copilot Apr 22, 2026
da16212
Document #:include support for file-based apps
Copilot Apr 22, 2026
dce1256
Reorganize supported directives in file-based apps docs
gewarren Apr 22, 2026
c26788a
Remove duplicate `#:include` directive section
gewarren Apr 22, 2026
45e2f60
Update docs/core/sdk/file-based-apps.md
gewarren Apr 22, 2026
94d3ead
Clarify #:include compilation behavior in file-based apps docs
Copilot Apr 22, 2026
b5f492a
Refine #:include clarification wording for list clarity
Copilot Apr 22, 2026
70062cf
Adjust include clarification phrasing
Copilot Apr 22, 2026
95713a7
Split include clarification into two sentences
Copilot Apr 22, 2026
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
17 changes: 15 additions & 2 deletions docs/core/sdk/file-based-apps.md
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
---
title: File-based apps
description: Learn how to create, build, and run C# applications from a single file without a project file.
ms.date: 12/05/2025
ms.date: 04/22/2026
ai-usage: ai-assisted
---
# File-based apps
Expand All @@ -21,7 +21,20 @@ In this article, learn how to create, configure, and work with file-based apps e

## Supported directives

File-based apps use directives prefixed with `#:` to configure the build and run the application. Supported directives include: `#:package`, `#:project`, `#:property`, and `#:sdk`. Place these directives at the top of the C# file.
File-based apps use directives prefixed with `#:` to configure the build and run the application. Supported directives are: `#:include`, `#:package`, `#:project`, `#:property`, and `#:sdk`. Place these directives at the top of the C# file.

### `#:include`

Includes another C# source file in the file-based app.

Included files compile as part of the same app. They can add types, top-level statements, and other declarations.

```csharp
#:include helpers.cs
#:include models/customer.cs
```

The `#:include` directive is available in .NET 11 Preview 3 and .NET SDK 10.0.3xx and later.
Comment thread
adegeo marked this conversation as resolved.
Copy link
Copy Markdown
Contributor

@adegeo adegeo Apr 29, 2026

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

We should wait for this to actually land in 3xx. It might not, you never know.

Do you think it's a good idea to put this up front? Someone may get here, try it, find it not working, never see that paragraph and complain it doesn't work.


### `#:package`

Expand Down
Loading