How To Create Azure Function In Visual Studio

This Azure tutorial will discuss how to create Azure Function in Visual Studio.

Create Azure Function In Visual Studio 2019

You can develop the Azure Functions using Visual Studio, just like you develop a .NET Project. When you choose Visual Studio as IDE to develop the Azure Function, you will get many benefits, like you can build, debug, and test the functionality in your local machine properly before moving to the Cloud.

Once you develop and test your Azure function successfully on your local machine, you can publish your Azure Function directly from your local environment to Azure with the help of Visual Studio in a fraction of a second.

You can write the code for your function in C# and use the C# attribute to declare your Azure Function and utilize all the benefits of Visual Studio.

This article will show how to develop and deploy Azure Functions using Visual Studio. We will be creating a new Azure Function project. We will see how we can build and run the Project in our local environment, and then we will see how we can publish that to Azure from our Visual Studio.

Before starting the actual development activities, we need a few things as Prerequisites

Prerequisites

• The first thing we need is an Azure Account or Azure Subscription. If you don’t have an Azure Account till now, create an Azure Free Account now.
•  Visual Studio 2019 with Azure development workload installed. If you don’t have Visual Studio 2019 installed on your machine, install Visual Studio 2019 now.
• We need Updated Azure Function tools.
• An Azure Storage Account. If you don’t have an Azure Storage Account till now, create an Azure Storage Account now.

Let’s discuss the steps to create Azure Functions In Visual Studio.

Create Azure Function In Visual Studio 2019 Step By Step

So, we will use the latest version of Visual Studio, i.e., Visual Studio 2019, for our development activities. As part of the development activity, we will create the Azure Function first, and then deploy the Azure Functions using Visual Studio.

To create Azure Function in Visual Studio, follow the below steps.

1. Open Visual Studio 2019.

2. Once the Visual Studio loaded successfully, click the Create a new project button from the Get Started window.

3. On the Create a new project window, Search for the Azure Functions template, choose the Azure Functions, and click the Next button.

4. On the Configure Your New Project window, Enter the Project name, choose a location where you want to create the project, and click the Create button.

5. On the Create a new Azure Functions Application window, we need to choose the trigger for our Azure Function, so choose the Http trigger as the trigger option. For the Storage Account (AzureWebJobsStorage) option, select Storage Emulator and Choose the Authorization level option as Function. So basically keep all the default options as it is as of now.

6. As you can see below, the Project was created successfully without any issues.

7. Open the local.settings.json file and check it contains the below code with a key-value pair of Azure Storage connection string.

{
    "IsEncrypted": false,
    "Values": {
        "AzureWebJobsStorage": "UseDevelopmentStorage=true",
        "FUNCTIONS_WORKER_RUNTIME": "dotnet"
    }
}

8. If you open the Function1.cs file, you can see a predefined method like the one below

This function will help to perform both the get and post-operation. if you are performing a GET request, then it will get the value from the query string in the URL with the key as name, and if you are performing a POST operation, it will get the name key value from the request body, and then it will return with the string “Hello {name value}” to us.

[FunctionName("Function1")]
        public static async Task<IActionResult> Run(
            [HttpTrigger(AuthorizationLevel.Function, "get", "post", Route = null)] HttpRequest req,
            ILogger log)
        {
            log.LogInformation("C# HTTP trigger function processed a request.");

            string name = req.Query["name"];

            string requestBody = await new StreamReader(req.Body).ReadToEndAsync();
            dynamic data = JsonConvert.DeserializeObject(requestBody);