Calling Node.js from ASP.NET Core

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);

   
   

   };