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Create a C# function using Visual Studio Code - Azure Functions
Learn how to create a C# function, then publish the local project to serverless hosting in Azure Functions using the Azure Functions extension in Visual Studio Code.
quickstart
06/03/2024
csharp
devx-track-csharp, mode-ui, vscode-azure-extension-update-complete, ai-video-demo
ai-assisted

Quickstart: Create a C# function in Azure using Visual Studio Code

This article creates an HTTP triggered function that runs on .NET 8 in an isolated worker process. For information about .NET versions supported for C# functions, see Supported versions.

There's also a CLI-based version of this article.

Completing this quickstart incurs a small cost of a few USD cents or less in your Azure account.

This video shows you how to create a C# function in Azure using VS Code.

[!VIDEO be75e388-1b74-4051-8a62-132b069a3ec9]

The steps in the video are also described in the following sections.

Configure your environment

Before you get started, make sure you have the following requirements in place:

[!INCLUDE functions-requirements-visual-studio-code-csharp]

[!INCLUDE functions-install-core-tools-vs-code]

Create your local project

In this section, you use Visual Studio Code to create a local Azure Functions project in C#. Later in this article, you'll publish your function code to Azure.

  1. In Visual Studio Code, press F1 to open the command palette and search for and run the command Azure Functions: Create New Project....

  2. Select the directory location for your project workspace and choose Select. You should either create a new folder or choose an empty folder for the project workspace. Don't choose a project folder that is already part of a workspace.

  3. Provide the following information at the prompts:

    Prompt Selection
    Select a language for your function project Choose C#.
    Select a .NET runtime Choose .NET 8.0 Isolated (LTS).
    Select a template for your project's first function Choose HTTP trigger.1
    Provide a function name Type HttpExample.
    Provide a namespace Type My.Functions.
    Authorization level Choose Anonymous, which enables anyone to call your function endpoint. To learn about authorization level, see Authorization keys.
    Select how you would like to open your project Select Open in current window.

    1 Depending on your VS Code settings, you may need to use the Change template filter option to see the full list of templates.

  4. Visual Studio Code uses the provided information and generates an Azure Functions project with an HTTP trigger. You can view the local project files in the Explorer. For more information about the files that are created, see Generated project files.

[!INCLUDE functions-run-function-test-local-vs-code-csharp]

After checking that the function runs correctly on your local computer, it's time to use Visual Studio Code to publish the project directly to Azure.

[!INCLUDE functions-sign-in-vs-code]

[!INCLUDE functions-publish-project-vscode]

[!INCLUDE functions-vs-code-run-remote]

[!INCLUDE functions-cleanup-resources-vs-code.md]

Next steps

You have used Visual Studio Code to create a function app with a simple HTTP-triggered function. In the next article, you expand that function by connecting to one of the core Azure storage services. To learn more about connecting to other Azure services, see Add bindings to an existing function in Azure Functions.

[!div class="nextstepaction"] Connect to Azure Cosmos DB [!div class="nextstepaction"] Connect to Azure Queue Storage