> create-react-app sample-15
> cd sample-15
> npm start

> npm install --save bootstrap

import "bootstrap/dist/css/bootstrap.css";

> npm i react-router-dom --save

import { BrowserRouter } from "react-router-dom";

ReactDOM.render(
  <BrowserRouter>
    <App />
  </BrowserRouter>,
  document.getElementById("root")
);

import React from "react";

const NavBar = () => {
  return (
    <nav className="navbar bg-dark navbar-dark navbar-expand-sm">
      <div className="navbar-nav">
        <a className="nav-item nav-link" href="/">
          Home
        </a>
        <a className="nav-item nav-link" href="/products">
          Products
        </a>
        <a className="nav-item nav-link" href="/posts/2018/06">
          Posts
        </a>
        <a className="nav-item nav-link" href="/admin">
          Admin
        </a>
      </div>
    </nav>
  );
};

export default NavBar;

import "./App.css";

import React, { Component } from "react";

import NavBar from "./components/navbar";

class App extends Component {
  render() {
    return (
      <div>
        <NavBar />
      </div>
    );
  }
}

export default App;

import "./App.css";

import React, { Component } from "react";
import { Route } from "react-router-dom";

import Dashboard from "./components/admin/dashboard";
import Home from "./components/home";
import NavBar from "./components/navbar";
import Posts from "./components/posts";
import Products from "./components/products";

class App extends Component {
  render() {
    return (
      <div>
        <NavBar />
        <div className="container">
          <Route path="/products" component={Products} />
          <Route path="/posts" component={Posts} />
          <Route path="/admin" component={Dashboard} />
          <Route path="/" component={Home} />
        </div>
      </div>
    );
  }
}

export default App;

import React from "react";

const Home = () => {
  return <h1>Home</h1>;
};

export default Home;

import React from "react";

const Posts = () => {
  return (
    <div>
      <h1>Posts</h1>
      Year: , Month:
    </div>
  );
};

export default Posts;

import React from "react";

const Dashboard = ({ match }) => {
  return (
    <div>
      <h1>Admin Dashboard</h1>
    </div>
  );
};

export default Dashboard;

<div className="container">
  <Route path="/products" component={Products} />
  <Route path="/posts" component={Posts} />
  <Route path="/admin" component={Dashboard} />
  <Route path="/" component={Home} />
</div>

<Route path="/" exact component={Home} />

import { Route, Switch } from "react-router-dom";

class App extends Component {
  render() {
    return (
      <div>
        <NavBar />
        <div className="container">
          <Switch>
            <Route path="/products" component={Products} />
            <Route path="/posts" component={Posts} />
            <Route path="/admin" component={Dashboard} />
            <Route path="/"  component={Home} />
          </Switch>
        </div>
      </div>
    );
  }
}

import React from "react";
import { Link } from "react-router-dom";

const NavBar = () => {
  return (
    <nav className="navbar bg-dark navbar-dark navbar-expand-sm">
      <div className="navbar-nav">
        <Link className="nav-item nav-link" to="/">
          Home
        </Link>
        <Link className="nav-item nav-link" to="/products">
          Products
        </Link>
        <Link className="nav-item nav-link" to="/posts/2018/06">
          Posts
        </Link>
        <Link className="nav-item nav-link" to="/admin">
          Admin
        </Link>
      </div>
    </nav>
  );
};

export default NavBar;

<Route
  path="/products"
  render={() => <Products param1="123" param2="456" />}
/>

<Route
  path="/products"
  render={props => (
    <Products param1="123" param2="456" {...props} />
  )}
/>

function getNewInfo(){
  $.ajax("url", function (newinfo) {
      // do something with the data
  // start the new request
      getNewINfo();
  });
}
// start the polling loop
getNewInfo();

var eventSrc = new EventSource("url");
    // register event handler for the message
    eventSrc.addEventListener( "message",function (evt) {
    //process the data
});

var socket = new WebSocket("url");
socket.onmessage = function (msg) {
var newInfo = msg.data;
// do something with the data
}
// client can also send request to server
socket.send(.... )

 PM> Install-Package Microsoft.AspNet.SignalR.Sample

 npm install
 

 ng add @angular/PWA

 ng build -- prod

 cd dist/Web Application  Pwa

 Http-server -o

 npm i http-server

"$schema": "./node_modules/@angular/service-worker/config/schema.json",
  "index": "/index.html",
  "assetGroups": [
    {
      "name": "app",
      "installMode": "prefetch",
      "resources": {
        "files": [
          "/favicon.ico",
          "/index.html",
          "/*.css",
          "/*.js"
        ]
      }
    }, {
      "name": "assets",
      "installMode": "lazy",
      "updateMode": "prefetch",
      "resources": {
        "files": [
          "/assets/**",
          "/*.(eot|svg|cur|jpg|png|webp|gif|otf|ttf|woff|woff2|ani)"
        ]
      }

    }
  ],
  "dataGroups": [
    {
      "name": "api-performance",
      "urls": [
        "https://api/**"
      ],
      "cacheConfig": {
        "strategy": "performance",
        "maxSize": 100,
        "maxAge": "3d"
      }
    }
  ]
}

"https://api/**"
 

if(this.swUpdate.isEnabled)
    {
      this.swUpdate.available.subscribe(()=> {

        if(confirm("New Version available.Load New Version?")){
          window.location.reload();
        }
      })
    }

Age :number
Fullname :string
Mobile : string

  npm install --save firebase @angular/fire

@NgModule({
  declarations: [AppComponent, RegisterComponent,AboutComponent, UserListComponent],
  imports: [
    BrowserModule,
    FormsModule,
    HttpClientModule,
    HttpClientModule,
    SharedModule,
    AppRoutingModule,
    AngularFireModule.initializeApp(environmentFirebase.firebase),
    AngularFireDatabaseModule,
    ServiceWorkerModule.register('ngsw-worker.js', { enabled: environment.production }),
  ],
  providers: [FirebaseService],
  bootstrap: [AppComponent]
})
export class AppModule {}

export const environment ={
   production: true,
   firebase: {
     apiKey: "AIz×××××××××××××××××××××××××××××××××8",
     authDomain: "pwaangular-6c041.firebaseapp.com",
     databaseURL: "https://pwaangular-6c041.firebaseio.com",
     projectId: "pwaangular-6c041",
     storageBucket: "pwaangular-6c041.appspot.com",
     messagingSenderId: "545522081966"
   }

}

import { Injectable } from '@angular/core';
import { Observable } from 'rxjs';
import * as firebase from 'firebase';
import { AngularFireDatabase } from '@angular/fire/database';
import { HttpClient } from '@angular/common/http';
import { map } from 'rxjs/operators';
import { ThrowStmt } from '@angular/compiler';
@Injectable({
  providedIn: 'root'
})
export class FirebaseService {

  ref = firebase.firestore().collection('users');
  constructor(public db: AngularFireDatabase,public _http:HttpClient) { 
 
  }

  getUsers(): Observable<any> {
    return new Observable((observer) => {
      this.ref.onSnapshot((querySnapshot) => {
        let User = [];
        querySnapshot.forEach((doc) => {
          let data = doc.data();
          User.push({
            key: doc.id,
            fullname: data.fullname,
            age: data.age,
            mobile: data.mobile
          });
        });
        observer.next(User);
      });
    });
  }

  getUser(id: string): Observable<any> {
    return new Observable((observer) => {
      this.ref.doc(id).get().then((doc) => {
        let data = doc.data();
        observer.next({
          key: doc.id,
          title: data.title,
          description: data.description,
          author: data.author
        });
      });
    });
  }

  postUser(user): Observable<any> {
    return new Observable((observer) => {
      
      this.ref.add(user).then((doc) => {
        observer.next({
          key: doc.id,
        });
      });
    });
  }

  updateUser(id: string, data): Observable<any> {
    return new Observable((observer) => {
      this.ref.doc(id).set(data).then(() => {
        observer.next();
      });
    });
  }

  deleteUser(id: string): Observable<{}> {
    return new Observable((observer) => {
      this.ref.doc(id).delete().then(() => {
        observer.next();
      });
    });
  }

getDataOnApi(){
  return this._http.get('https://site.com/api/General/Getprovince')
  .pipe(
      map((res: Response) => {
return res;

      })
  );
}

getOnApi(){
  return  this._http.get("https://site.com/api/General/Getprovince",).pipe(
    map((response:any) => {
       
return  response
    } )
    );
}
}

ng build --prod
cd dist/Pwa-WepApp
Http-server -o

 <!-- Required for routing -->
<script src="~/node_modules/angular2/bundles/router.dev.js"></script>

 <!DOCTYPE html>
<html>
<head>
    <base href="/">

//same as before ...
import { ROUTER_PROVIDERS } from 'angular2/router';
 
//same as before ... 

@Component({
//same as before …
    providers: [
        ProductService,
        HTTP_PROVIDERS,
        ROUTER_PROVIDERS
    ]
})
//same as before ...

<div class='panel panel-primary'>
    <div class='panel-heading'>
        {{pageTitle}}
    </div>
</div>

import { Component } from 'angular2/core';

@Component({
    templateUrl: 'app/products/product-detail.component.html'
})
export class ProductDetailComponent  {
    pageTitle: string = 'Product Detail'; 
}

 { path: '/products', name: 'Products', component: ProductListComponent },

//same as before …
import { ROUTER_PROVIDERS, RouteConfig } from 'angular2/router';
 
//same as before …
 
@Component({
    //same as before …
})
@RouteConfig([
    { path: '/welcome', name: 'Welcome', component: WelcomeComponent, useAsDefault: true },
    { path: '/products', name: 'Products', component: ProductListComponent }
])
export class AppComponent {
    pageTitle: string = "DNT AngularJS 2.0 APP";
}

import { Component } from 'angular2/core';
 
@Component({
    templateUrl: 'app/home/welcome.component.html'
})
export class WelcomeComponent {
    public pageTitle: string = "Welcome";
}

<div class="panel panel-primary">
    <div class="panel-heading">
        {{pageTitle}}
    </div>
    <div class="panel-body">
        <h3 class="text-center">Default page</h3>
    </div>
</div>

 import { WelcomeComponent } from './home/welcome.component';

@Component({
    //same as before …
    template: `
     <div>
        <nav class='navbar navbar-default'>
            <div class='container-fluid'>
                <a class='navbar-brand'>{{pageTitle}}</a>
                <ul class='nav navbar-nav'>
                    <li><a [routerLink]="['Welcome']">Home</a></li>
                    <li><a [routerLink]="['Products']">Product List</a></li>
                </ul>
            </div>
        </nav>
        <div class='container'>
            <router-outlet></router-outlet>
        </div>
     </div>
    `,
    //same as before …
})

 import { ROUTER_PROVIDERS, RouteConfig, ROUTER_DIRECTIVES } from 'angular2/router';

 directives: [ROUTER_DIRECTIVES],

//same as before …

import { ProductDetailComponent } from './products/product-detail.component';
 
@Component({
    //same as before …
})
@RouteConfig([
    //same as before …
    { path: '/product/:id', name: 'ProductDetail', component: ProductDetailComponent }
])
//same as before …

 <td>{{ product.productName }}</td>

<td>
    <a [routerLink]="['ProductDetail', {id: product.productId}]">
        {{product.productName}}
    </a>
</td>

import { Component, OnInit } from 'angular2/core';
import { ROUTER_DIRECTIVES } from 'angular2/router';
//same as before …
 
@Component({
    //same as before …
    directives: [StarComponent, ROUTER_DIRECTIVES]
})

import { Component } from 'angular2/core';
import { RouteParams } from 'angular2/router';
 
@Component({
    templateUrl: 'app/products/product-detail.component.html'
})
export class ProductDetailComponent {
    pageTitle: string = 'Product Detail';
 
    constructor(private _routeParams: RouteParams) {
        let id = +this._routeParams.get('id');
        this.pageTitle += `: ${id}`;
    } 
}

<div class='panel panel-primary'>
    <div class='panel-heading'>
        {{pageTitle}}
    </div>
    <div class='panel-footer'>
        <a class='btn btn-default' (click)='onBack()' style='width:80px'>
            <i class='glyphicon glyphicon-chevron-left'></i> Back
        </a>
    </div>    
</div>

import { Component } from 'angular2/core';
import { RouteParams, Router } from 'angular2/router';
 
@Component({
    templateUrl: 'app/products/product-detail.component.html'
})
export class ProductDetailComponent {
    pageTitle: string = 'Product Detail';
 
    constructor(private _routeParams: RouteParams, private _router: Router) {
        let id = +this._routeParams.get('id');
        this.pageTitle += `: ${id}`;
    }
 
    onBack(): void {
        this._router.navigate(['Products']);
    }
}

public class RouteConfig
{
    public static void RegisterRoutes(RouteCollection routes)
    {
        routes.IgnoreRoute("{resource}.axd/{*pathInfo}");
 
        routes.MapRoute(
            name: "Default",
            url: "{controller}/{action}/{id}",
            defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional },
            constraints: new { controller = "Home" } // for catch all to work, Home|About|SomeName
        );
 
        // Route override to work with Angularjs and HTML5 routing
        routes.MapRoute(
            name: "NotFound",
            url: "{*catchall}",
            defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
        );
    }
}

.NotSupportedException: The method 'Max' is not supported

 export class MyService {}

 let svc = new MyService();

 constructor(private _myService: MyService){}

import { Injectable } from 'angular2/core';
import { IProduct } from './product';
 
@Injectable()
export class ProductService {
 
    getProducts(): IProduct[] {
        return [
            {
                "productId": 2,
                "productName": "Garden Cart",
                "productCode": "GDN-0023",
                "releaseDate": "March 18, 2016",
                "description": "15 gallon capacity rolling garden cart",
                "price": 32.99,
                "starRating": 4.2,
                "imageUrl": "app/assets/images/garden_cart.png"
            },
            {
                "productId": 5,
                "productName": "Hammer",
                "productCode": "TBX-0048",
                "releaseDate": "May 21, 2016",
                "description": "Curved claw steel hammer",
                "price": 8.9,
                "starRating": 4.8,
                "imageUrl": "app/assets/images/rejon_Hammer.png"
            }
        ];
    }
}

import { Component } from 'angular2/core';
import { ProductListComponent } from './products/product-list.component';
import { ProductService } from './products/product.service';
 
@Component({
    selector: 'pm-app',
    template:`
    <div><h1>{{pageTitle}}</h1>
        <pm-products></pm-products>
    </div>
    `,
    directives: [ProductListComponent],
    providers: [ProductService]
})
export class AppComponent {
    pageTitle: string = "DNT AngularJS 2.0 APP";
}

import { ProductService } from './product.service';
export class ProductListComponent implements OnInit {
    pageTitle: string = 'Product List';
    imageWidth: number = 50;
    imageMargin: number = 2;
    showImage: boolean = false;
    listFilter: string = 'cart';
 
    constructor(private _productService: ProductService) {
    }

private _productService: ProductService;
constructor(productService: ProductService) {
   _productService = productService;
}

 products: IProduct[];

 this.products = _productService.getProducts();

export class ProductListComponent implements OnInit {
products: IProduct[];

constructor(private _productService: ProductService) {
}

ngOnInit(): void {
    //console.log('In OnInit');
    this.products = this._productService.getProducts();
}

ASP.NET Core OData now Available 

OData v4 support
Bug fixes

/* Query with related entities using expand */
// query for orders of customers whose name begins "Alfreds"
// include their customers & child details & their detail products
breeze.EntityQuery.from("Orders")
   .where("Customer.CompanyName", "startsWith", "Alfreds")
   .expand("Customer, OrderDetails.Product")
   .using(manager)
   .execute().then(querySucceeded).fail(queryFailed);

// execute query asynchronously on the server
manager.executeQuery(query).then(querySuccess).fail(queryFail);
 
// execute query synchronously on local cache
var customers = manager.executeQueryLocally(query)