# Configuring ASP.net Core application to work with Angular 2 and TypeScript

SCENARIO: ASP.NET Core background Angular 2 Front-End Angular 2 Components using Asp.net Core Controllers

It way can implement Angular 2 over Asp.Net Core app. It let us call MVC Controllers from Angular 2 components too with the MVC result View supporting Angular 2.

# Asp.Net Core + Angular2 + Gulp

Startup.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Builder;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Configuration;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Logging;
using CoreAngular000.Data;
using CoreAngular000.Models;
using CoreAngular000.Services;
using Microsoft.Extensions.FileProviders;
using System.IO;

namespace CoreAngular000
{
    public class Startup
    {
        public Startup(IHostingEnvironment env)
        {
        var builder = new ConfigurationBuilder()
            .SetBasePath(env.ContentRootPath)
            .AddJsonFile("appsettings.json", optional: false, reloadOnChange: 
true)
            .AddJsonFile($"appsettings.{env.EnvironmentName}.json", optional: 
true);

        if (env.IsDevelopment())
        {
            
            builder.AddUserSecrets<Startup>();
        }

        builder.AddEnvironmentVariables();
        Configuration = builder.Build();
    }

    public IConfigurationRoot Configuration { get; }

   
    public void ConfigureServices(IServiceCollection services)
    {
        // Add framework services.
        services.AddDbContext<ApplicationDbContext>(options =>
            options.UseSqlServer(Configuration.GetConnectionString("DefaultConnection")));

        services.AddIdentity<ApplicationUser, IdentityRole>()
            .AddEntityFrameworkStores<ApplicationDbContext>()
            .AddDefaultTokenProviders();

        services.AddMvc();

        // Add application services.
        services.AddTransient<IEmailSender, AuthMessageSender>();
        services.AddTransient<ISmsSender, AuthMessageSender>();
    }

   public void Configure(IApplicationBuilder app, IHostingEnvironment env, 
ILoggerFactory loggerFactory)
    {
        loggerFactory.AddConsole(Configuration.GetSection("Logging"));
        loggerFactory.AddDebug();

        if (env.IsDevelopment())
        {
            app.UseDeveloperExceptionPage();
            app.UseDatabaseErrorPage();
            app.UseBrowserLink();
        }
        else
        {
            app.UseExceptionHandler("/Home/Error");
        }

        app.UseDefaultFiles();
        app.UseStaticFiles();
        app.UseStaticFiles(new StaticFileOptions
        {
            FileProvider = new   
PhysicalFileProvider(Path.Combine(env.ContentRootPath, "node_modules")),
            RequestPath = "/node_modules"
        });

        app.UseMvc(routes =>
        {
            routes.MapRoute(
                name: "default",
                template: "{controller=Home}/{action=Index}/{id?}");
        });
    }
}
}

tsConfig.json


   {
  "compilerOptions": {
    "diagnostics": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "lib": [ "es2015", "dom" ],
    "listFiles": true,
    "module": "commonjs",
    "moduleResolution": "node",
    "noImplicitAny": true,
    "outDir": "wwwroot",
    "removeComments": false,
   "rootDir": "wwwroot",
    "sourceMap": true,
    "suppressImplicitAnyIndexErrors": true,
    "target": "es5"
  },
  "exclude": [
    "node_modules",
    "wwwroot/lib/"
  ]
}

Package.json


  {
 "name": "angular dependencies and web dev package",
 "version": "1.0.0",
 "description": "Angular 2 MVC. Samuel Maícas Template",
 "scripts": {},
 "dependencies": {
   "@angular/common": "~2.4.0",
   "@angular/compiler": "~2.4.0",
   "@angular/core": "~2.4.0",
   "@angular/forms": "~2.4.0",
   "@angular/http": "~2.4.0",
   "@angular/platform-browser": "~2.4.0",
   "@angular/platform-browser-dynamic": "~2.4.0",
   "@angular/router": "~3.4.0",
  "angular-in-memory-web-api": "~0.2.4",
   "systemjs": "0.19.40",
   "core-js": "^2.4.1",
   "rxjs": "5.0.1",
   "zone.js": "^0.7.4"
 },
 "devDependencies": {
   "del": "^2.2.2",
   "gulp": "^3.9.1",
   "gulp-concat": "^2.6.1",
   "gulp-cssmin": "^0.1.7",
   "gulp-htmlmin": "^3.0.0",
   "gulp-uglify": "^2.1.2",
   "merge-stream": "^1.0.1",
   "tslint": "^3.15.1",
   "typescript": "~2.0.10"
  },
  "repository": {}
}

bundleconfig.json


   [
  {
    "outputFileName": "wwwroot/css/site.min.css",
     "inputFiles": [
      "wwwroot/css/site.css"
    ]
  },
  {
    "outputFileName": "wwwroot/js/site.min.js",
    "inputFiles": [
      "wwwroot/js/site.js"
    ],
    "minify": {
      "enabled": true,
      "renameLocals": true
    },
    "sourceMap": false
  }
]

Convert bundleconfig.json to gulpfile (RightClick bundleconfig.json on solution explorer, Bundler&Minifier > Convert to Gulp

Views/Home/Index.cshtml


   @{
    ViewData["Title"] = "Home Page";
}
<div>{{ nombre }}</div>

For wwwroot folder use https://github.com/angular/quickstart seed. You need: index.html main.ts, systemjs-angular-loader.js, systemjs.config.js, tsconfig.json And the app folder

wwwroot/Index.html


   <html>
  <head>
    <title>SMTemplate Angular2 & ASP.NET Core</title>
    <base href="/">
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">


    <script src="node_modules/core-js/client/shim.min.js"></script>

    <script src="node_modules/zone.js/dist/zone.js"></script>
    <script src="node_modules/systemjs/dist/system.src.js"></script>

    <script src="systemjs.config.js"></script>
    <script>
      System.import('main.js').catch(function(err){ console.error(err); });
    </script>
  </head>

  <body>
    <my-app>Loading AppComponent here ...</my-app>
  </body>
</html>

You can call as it to Controllers from templateUrl. wwwroot/app/app.component.ts

import { Component } from '@angular/core';

@Component({
  selector: 'my-app',
  templateUrl: '/home/index',
 })
export class AppComponent  { nombre = 'Samuel Maícas'; }

# [Seed] Asp.Net Core + Angular2 + Gulp on Visual Studio 2017

  1. Download seed
  2. Run dotnet restore
  3. Run npm install

Always. Enjoy.

https://github.com/SamML/CoreAngular000

# MVC <-> Angular 2

How to: CALL ANGULAR 2 HTML/JS COMPONENT FROM ASP.NET Core CONTROLLER:

We call the HTML instead return View()


return File("~/html/About.html", "text/html");

And load angular component in the html. Here we can decide if we want to work with same or diferent module. Depends on situation.

wwwroot/html/About.html


   <!DOCTYPE html>
<html>
  <head>
    <title>About Page</title>
    <base href="/">
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
      <link href="../css/site.min.css" rel="stylesheet" type="text/css"/>

    <script src="../node_modules/core-js/client/shim.min.js"></script>

    <script src="../node_modules/zone.js/dist/zone.js"></script>
    <script src="../node_modules/systemjs/dist/system.src.js"></script>

    <script src="../systemjs.config.js"></script>
    <script>
      System.import('../main.js').catch(function(err){ console.error(err); });
    </script>
  </head>

  <body>
    <aboutpage>Loading AppComponent here ...</aboutpage>
  </body>
</html>

(*)Already this seed needs to load the entire list of resources

How to: CALL ASP.NET Core Controller to show a MVC View with Angular2 support:

import { Component } from '@angular/core';

@Component({
  selector: 'aboutpage',
  templateUrl: '/home/about',
})
export class AboutComponent  {
    
}