create-first-function-vs-code-csharp.md

title	description	ms.topic	ms.date	ms.custom	adobe-target	adobe-target-activity	adobe-target-experience	adobe-target-content
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	08/15/2021	devx-track-csharp	true	DocsExp–386541–A/B–Enhanced-Readability-Quickstarts–2.19.2021	Experience B	./create-first-function-vs-code-csharp-ieux

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

[!INCLUDE functions-language-selector-quickstart-vs-code]

In this article, you use Visual Studio Code to create a C# function that responds to HTTP requests. After testing the code locally, you deploy it to the serverless environment of Azure Functions.

This article supports creating both types of compiled C# functions:

• In-process - runs in the same process as the Functions host process. To learn more, see Develop C# class library functions using Azure Functions.
• Isolated process - runs in a separate .NET worker process. To learn more, see Guide for running functions on .NET 5.0 in Azure.

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

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

Configure your environment

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

In-process

• Azure Functions Core Tools version 3.x.

• Visual Studio Code on one of the supported platforms.

• C# extension for Visual Studio Code.

• Azure Functions extension for Visual Studio Code.

Isolated process

• .NET 5.0 SDK

• Azure Functions Core Tools version 3.x.

• Visual Studio Code on one of the supported platforms.

• C# extension for Visual Studio Code.

• Azure Functions extension for Visual Studio Code.

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• You also need an Azure account with an active subscription. Create an account for free.

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. Choose the Azure icon in the Activity bar, then in the Azure: Functions area, select the Create new project... icon.

   

2. Choose a directory location for your project workspace and choose Select.

   [!NOTE] These steps were designed to be completed outside of a workspace. In this case, do not select a project folder that is part of a workspace.

3. Provide the following information at the prompts:

   In-process

   Prompt	Selection
   Select a language for your function project	Choose C#.
   Select a .NET runtime	Choose .NET Core 3.1 LTS.
   Select a template for your project's first function	Choose HTTP trigger.
   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	Choose Add to workspace.

   Isolated process

   Prompt	Selection
   Select a language for your function project	Choose C#.
   Select a .NET runtime	Choose .NET 5.0 Isolated.
   Select a template for your project's first function	Choose HTTP trigger.
   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	Choose Add to workspace.

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4. Using this information, Visual Studio Code generates an Azure Functions project with an HTTP trigger. You can view the local project files in the Explorer. To learn more about files that are created, see Generated project files.

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

After you've verified 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 either Azure Cosmos DB or Azure Queue Storage. To learn more about connecting to other Azure services, see Add bindings to an existing function in Azure Functions.

In-process

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

Isolated process

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

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