How Can I Use NuGet Packages in My Azure Functions?

Using NuGet Packages in Azure Functions: A Complete Guide

Azure Functions Easily extend functionality through NuGet packages. Unlike traditional web applications, Azure Functions may not have a dedicated NuGet management mechanism. However, the runtime supports NuGet references seamlessly, ensuring their correct use during function compilation and execution.

Integrate NuGet packages step by step

To integrate a NuGet package into your function, you must create a Project.json file that outlines your dependency requirements. Consider the following example to reference Microsoft.ProjectOxford.Face version 1.1.0:

<code class="language-json">{
  "frameworks": {
    "net46":{
      "dependencies": {
        "Microsoft.ProjectOxford.Face": "1.1.0"
      }
    }
   }
}</code>

Upload Project.json file

To upload the project.json file to your function:

1. Navigate to the "Develop" section of the function and click "View File".
2. Select for creating new files.
3. Name the file project.json and paste the contents.

Startup package restore

After uploading the project.json file, the package restore process will start automatically. Watch the output in the log window:

<code>正在为D:\home\site\wwwroot\HttpTriggerCSharp1\Project.json还原包...
正在安装Newtonsoft.Json 6.0.8。
正在安装Microsoft.ProjectOxford.Face 1.1.0。
包已还原。</code>

Use NuGet package

After the package restore is complete, Azure Functions automatically adds a reference to the package assembly. Therefore, you don't need to add assembly references manually. Just use the necessary using statements and leverage the types defined in the referenced NuGet package.

Other deployment options

In addition to the recommended methods, Azure Functions offers additional deployment options:

• App Service Editor (Monaco): Use the App Service Editor to manage files directly from your browser.
• SCM (Kudu) Endpoint: Use the SCM endpoint by dragging and dropping your project.json file into the function's folder.
• FTP: Configure FTP and upload your project.json file to the appropriate directory.
• Continuous Integration: Package restore will happen automatically when your Function App initializes.
• Precompiled assemblies: Deploy functions as precompiled assemblies and manage dependencies in Visual Studio.

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