Calling Node.js from ASP.NET Core

[Prashant Pratap]

First published on MSDN on Oct 23, 2017

Here are the steps to invoke Node.js from ASP.NET Core Website

1. Add below line in the ConfiguraServices() in Startup.cs
   
   

   public
   void
   ConfigureServices(IServiceCollection services)

   
   

   {

   
   

   services.AddMvc();

   
   

   services.AddNodeServices();

   
   

   }




2. Add constructor in the Controller

   public
   class
   HomeController : Controller

   
   

   {

   
   

   INodeServices
   nodeServices;

   
   

   public
   HomeController(INodeServices nodeServices)

   
   

   {

   
   

   this.nodeServices =
   nodeServices;

   
   

   }




3. Call NodeServices as shown below

   public
   async  Task<IActionResult>
   About()

   
   

   {

   
   

   var
   msg = await
   nodeServices.InvokeAsync<string>("./hello.js",
   1);

   
   
   

   ViewData["Message"] = msg;

   
   

   return View();

   
   

   }




4. Add following code to js file

   module.exports = function (callback)

   
   

   {

   
   

   var
   message = 'Hello
   world';

   
   

   callback(null, message);

   
   

   };