Angular2: Speech IMDB using Angular2, Typescript, Web API and ASP.NET MVC

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Speech based Search Movie Web App using Angular2, TypeScript, BING API, ASP.NET MVC, Web API & Web Speech API

This web application assist you to search movies and seasons through voice. Just say any keyword from movie and season name and then command by saying term search to look from millions of record rapidly.

Project Website

Project Code


Dashboard

This is the homepage of application and displays latest Hollywood news at the moment. BING API has been used over here to retrieve latest Hollywood news.

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Manual Search

Just for the ease, manual search has been provided with parameter likes searching content name, year, content type(movie, series, episode). Please note year and type are optional.

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Voice Search

Awesome part starts from here, you may say any thing to search for movie, series and episode. You will also able to see on runtime in message box and console window what keyword your have voiced out to search.

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Movie List Page

This page shows list of all movies, series and episode relevant to your search keyword, pagination has been implemented in case of large returned data set along with sorting functionality. Thumbnail associated with each record will help you to quickly pick your content.

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Movie Detail Page

This page shows full detail of user selected movie/series/episode. It displays unique url to checkout content’s reviews on IMDB , content’s rating, votes and full fledged poster.

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ASP.NET MVC: 500 Internal Server Error on requesting css, js, images, woff, woff2 resource files

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I was working on deployment of Angular2 application with ASP.NET MVC 5 on Azure and came across this specific issue that all images of extension .woff and .woff2 were not loading successfully in browser, although path of these files were correct, Everything was working fine in local machine but after deployment on Azure it stop loading all sprites and images with mime of extension .woff, .woff2.

My project web.config has below code:

<staticContent>
  <mimeMap fileExtension=".woff" mimeType="application/x-font-woff" />
  <mimeMap fileExtension=".woff2" mimeType="application/x-font-woff" />
</staticContent>

I checked all below scenario and there was no issue:

  • Check permissions in IIS and on disk for files
  • Check IIS setting for static files

Solution:

Where as I needed below code because newer version of IIS on Server 2012 has .woff and .woff2 already added in its MIME list, if we try to add same MIME again then it crash without giving any proper stack trace error and just went 500. So I remove faulty file extension and introduce proper MIME configuration in web.config all over again..

<staticContent>
      <remove fileExtension=".woff" />
      <remove fileExtension=".woff2" />
      <mimeMap fileExtension=".woff" mimeType="application/font-woff" />
      <mimeMap fileExtension=".woff2" mimeType="application/font-woff2" />
</staticContent>

 

 

HttpClient: Error – Does not contain a definition for ‘ReadAsAsync’ and no extension method ‘ReadAsAsync’ could be found

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I was working on code and came across this error:

System.Net.Http.HttpContent’ does not contain a definition for ‘ReadAsAsync’ and no extension method ‘ReadAsAsync’ accepting a first argument of type ‘System.Net.Http.HttpContent’ could be found

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Solution:

PM> install-package Microsoft.AspNet.WebApi.Client

According to the System.Net.Http.Formatting NuGet package page, the System.Net.Http.Formatting package is now legacy and can instead be found in the Microsoft.AspNet.WebApi.Client package available on NuGet here.

OR

Add a reference of System.Net.Http.Formatting.dll in you project

Add Reference -> Assemblies -> Extensions. If it is not listed, go to the Search Assemblies box and type 'formatting'. Hopefully that finds it easier for you

Angular: Resolving Routing conflict of Angular 1 and Angular 2 for ASP.NET MVC and ASP.NET WEBApi

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This is a quick-fix solution, you need to improvise it a lot in-order to make it more like a production code.

Assuming you have followed proper style guidelines for Angular 1 and Angular 2, so application will be already composed into modules within your angular code, follow below routing guideline by introducing module name / application name and then specific location route

Routes = [
    { path: 'home/dashboard', component: DashboardComponent },
    { path: 'home/notification', component: NotificationComponent },
    { path: 'movie/searchMovie', component: SearchMovieComponent },
    { path: 'movie/searchMovieList', component: SearchMovieListComponent },
    { path: 'movie/searchMovieDetail', component: SearchMovieDetailComponent }
];

In asp.net mvc/webapi routeConfig.cs/webapiConfig.cs file you need to define these custom routes before default route

routes.MapRoute(
    name: "homeDashboard",
    url: "home/{*.}",
    defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);

routes.MapRoute(
    name: "searchMovie",
    url: "movie/{*.}",
    defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);

routes.MapRoute(
    name: "Default",
    url: "{controller}/{action}/{id}",
    defaults: new { controller = "Home", action = "Index", id = UrlParameter.Optional }
);

url attribute clearly shows that mvc/webapi routing engine will accept any route if it has movie as or home as starting reference in route pattern and this will help you to get rid of “The resource cannot be found – HTTP 404” error.

Angular2: Step by Step guide of using Angular2 with Typescript for ASP.NET MVC in Visual Studio 2015

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During last couple of months, I have received a lot of requests how to use angular2 in ASP.NET MVC in visual studio environment, Its quite easy to integrate angular2 in asp.net core project, so I am publishing step by step guide to integrate Angular 2 in ASP.NET MVC.

Pre Step:

    • Install Visual Studio

Download latest version of Visual Studio 2015 Community Edition with recent update (Update 3)

    • Install NodeJS and NPM

Download latest version of Nodejs and NPM (Make sure that you are running node version 4.4.x5.x.x, and npm 3.x.x by running node -v and npm -v in a terminal/console window. Older versions produce errors.)

    • Install Node.js Tools for Visual Studio (optional)

Download – Turn Visual Studio into a powerful Node.js development environment.

    • Install Typescript

Download latest version of Typescript (version >= 2.0)
OR
Ensure you have the latest version of Visual Studio 2015 installed. Then open Visual Studio and install the latest set of TypeScript tools as follows:

  • Open Tools | Extensions and Updates.
  • Select Online in the tree on the left.
  • Search for TypeScript using the search box in the upper right.
  • Select the most current available TypeScript version.
  • Download and install the package.
    • Install Package Installer extension (optional)

Download – Visual Studio extension that makes it easy and fast to install Bower, npm, JSPM, TSD, Typings and NuGet packages.


 Download Demo from Github

Step 1: Create an ASP.NET MVC project

Create the ASP.NET 4.x project as follows:

  • In Visual Studio, select File | New | Project from the menu.
  • In the template tree, select Templates | Visual C# (or Visual Basic) | Web.
  • Select the ASP.NET Web Application template, give the project a name, and click OK.
  • Select the desired ASP.NET 4.5.2 template (>= 4.x.x) and click OK.

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  • Avoid Adding any authorization and authentication at this point of time to keep project quite simple

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Please note all configuration and package versions are according to Angular Quickstart Guide


Step 2: Create Package.json file

package.json identifies npm package dependencies for the project.

{
  "name": "ang2demo",
  "version": "1.0.0",
  "scripts": {},
  "license": "ISC",
  "dependencies": {
    "@angular/common": "~2.0.1",
    "@angular/compiler": "~2.0.1",
    "@angular/core": "~2.0.1",
    "@angular/forms": "~2.0.1",
    "@angular/http": "~2.0.1",
    "@angular/platform-browser": "~2.0.1",
    "@angular/platform-browser-dynamic": "~2.0.1",
    "@angular/router": "~3.0.1",
    "@angular/upgrade": "~2.0.1",
    "bootstrap": "^3.3.7",
    "core-js": "^2.4.1",
    "reflect-metadata": "^0.1.8",
    "rxjs": "5.0.0-beta.12",
    "systemjs": "0.19.39",
    "zone.js": "^0.6.25"
  },
  "devDependencies": {
    "@types/core-js": "^0.9.34",
    "typescript": "^2.0.3",
    "typings": "^1.4.0"
  }
}

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Note:

Please note that @types/core-js are not mentioned in Angular Quickstart Guide in devDepenedcies section, Add this to avoid duplicate identifier error otherwise you are going to get as “Angular 2 can’t find Promise, Map, Set and Iterator”


Step 3: Create tsconfig.json file

This file defines how the TypeScript compiler generates JavaScript from the project’s files.

For Visual Studio 2015 we must add "compileOnSave": true to the TypeScript configuration (tsconfig.json) file as shown here.

{
  "compileOnSave": true,
  "compilerOptions": {
    "target": "es5",
    "module": "commonjs",
    "moduleResolution": "node",
    "sourceMap": true,
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "removeComments": false,
    "noImplicitAny": false,
    "typeRoots": [
      "node_modules/@types"
    ],
    "types": [
      "core-js"
    ]
  }
}

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Note:

  • On creating this file you will receive alert from Visual Studio such as below, Just Press No:

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  • Please note that below code is not note mentioned in Angular Quickstart Guide in tsconfig.json, Add this to avoid duplicate identifier error otherwise you are going to get as “Angular 2 can’t find Promise, Map, Set and Iterator”

screenshot_2


Step 4: Create typings.json file

This file provides additional definition files for libraries that the TypeScript compiler doesn’t natively recognize.

{
  "globalDependencies": {
    "core-js": "registry:dt/core-js#0.0.0+20160725163759",
    "jasmine": "registry:dt/jasmine#2.2.0+20160621224255",
    "node": "registry:dt/node#6.0.0+20160909174046"
  }
}

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Step 5: Install package.json file

Open CMD and redirect to your application folder and Using npm from the command line, install the packages listed in package.json with the command:

> npm install

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After executing command, output will be like this.

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Note:

    • Error messages—in red—might appear during the install, and you might see npm WARN messages. As long as there are no npm ERR! messages at the end, you can assume success.
    • Do not include the node_modules folder in the project. Let it be a hidden project folder.But you may view the hidden folder in Visual Studio using “Show All Files” option in Solution Explorer.

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Step 6: Create Sample Angular 2 Code using Typescript

I am using sample code from Angular Quickstart Guide

1. Create a folder name “App” in Scripts folder

2. Create application module file

Angular itself is split into separate Angular Modules. This makes it possible for you to keep payload size small by only importing the parts of Angular that your application needs.Every Angular application has at least one module: the root module, named AppModule here.

Create the file App/app.module.ts with the following content:

import { NgModule }      from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
import { AppComponent }   from './app.component';
@NgModule({
  imports:      [ BrowserModule ],
  declarations: [ AppComponent ],
  bootstrap:    [ AppComponent ]
})
export class AppModule { }

This is the entry point to your application.

Root module needs to import the BrowserModule from @angular/platform-browser to the imports array.

This is the smallest amount of Angular that is needed for a minimal application to run in the browser.

3. Create a component & add it to your application

Every Angular application has at least one component: the root component, named AppComponent here.Components are the basic building blocks of Angular applications. A component controls a portion of the screen—a view—through its associated template.

Create the file App/app.component.ts with the following content:

import { Component } from '@angular/core';
@Component({
  selector: 'my-app',
  template: 'My First Angular App - Demo' }) 
export class AppComponent { }

4. Create a Start up file

Now we need to tell Angular to start up your application.

Create the file App/main.ts with the following content:

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';
import { AppModule } from './app.module';
const platform = platformBrowserDynamic();
platform.bootstrapModule(AppModule);

This code initializes the platform that your application runs in, then uses the platform to bootstrap your AppModule.

Note:

  • Please note that transplied typescript files will automatically be available in App folder as we have mentioned attribute CompileOnSave is true in tsconfig.json

Files visible in Visual Studio:

screenshot_2

Files visible in Folder:

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Step 7: Create systemjs.config.js file

This file provides information to a module loader about where to find application modules, and registers all the necessary packages.

Create the file Scripts/systemjs.config.js with the following content:

/**
 * System configuration for Angular samples
 * Adjust as necessary for your application needs.
 */
(function (global) {
    System.config({
        paths: {
            // paths serve as alias
            'npm:': '/node_modules/'
        },
        // map tells the System loader where to look for things
        map: {
            // our app is within the app folder
            app: '/Scripts',
            // angular bundles
            '@angular/core': 'npm:@angular/core/bundles/core.umd.js',
            '@angular/common': 'npm:@angular/common/bundles/common.umd.js',
            '@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
            '@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
            '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
            '@angular/http': 'npm:@angular/http/bundles/http.umd.js',
            '@angular/router': 'npm:@angular/router/bundles/router.umd.js',
            '@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',
            // other libraries
            'rxjs': 'npm:rxjs'
        },
        // packages tells the System loader how to load when no filename and/or no extension
        packages: {
            app: {
                main: './main.js',
                defaultExtension: 'js'
            },
            rxjs: {
                defaultExtension: 'js'
            }
        }
    });
})(this);

screenshot_5

Note:

    • npm attribute highlighted in red color in above image should point to folder which has all installed packages, in our case it is node_modules folder.
    • app attribute highlighted in red color in above image should point to folder which has all application transcript code, in our case it is Scripts folder.
    • main attribute highlighted in red color in above image should point to js file which contains angular application startup code, in our case it is main.ts file.

Step 8: Load and Render Angular2 application in ASP.NET MVC Views

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  • In order to load angular 2 application in MVC, integrate angular 2 libraries references and system.js configurations in Views/Shared/_Layout.cshtml file
   
   
   @ViewBag.Title - My ASP.NET Application
    @Styles.Render("~/Content/css")
    @Scripts.Render("~/bundles/modernizr")
    http://~/node_modules/core-js/client/shim.min.js
    http://~/node_modules/zone.js/dist/zone.js
    http://~/node_modules/reflect-metadata/Reflect.js
    http://~/node_modules/systemjs/dist/system.src.js

    
    http://~/Scripts/systemjs.config.js
    
        System.import('../../Scripts/App/main').catch(function (err)
        {
            console.error(err);
        });
    

 System.import('../../Scripts/App/main')
  • In order to kickstart angular code in browser, integrate component in Views/Home/index.cshtml file
@{
    ViewBag.Title = "Home Page";
}

Loading...

Step 9: Build and run the app

Click the Run button or press CTRL + F5 to build and run the application.

This launches the default browser and runs the QuickStart sample application.

screenshot_2

Try editing any of the project files. Save and refresh the browser to see the changes.


In case of Error such as:

  • Error 1

Compiler errors such as “Property map does not exist on type Observable” and “Observable cannot be found” indicate an old release of Visual Studio. Exit Visual Studio and follow the instructions here.

You’ll be asked to replace the file

c:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE\CommonExtensions\Microsoft\TypeScript.typescriptServices.js

This operation requires admin privileges.

OR Stackoverflow link

  • Error 2

IDE issues such as ‘component can not be properly resolved, probably its located in an inaccessible module’

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occurs when angular2 keyowrd are highlighted red as no intellisense is available for them by Visual Studio 2015 visible in below images

screenshot_4 screenshot_6

Inorder to resolve them make sure you have Resharper -> Check your Resharper Typescript Language settings. Resharper might be set to older version of typescript 1.6.  Download latest version of resharper and restart Visual Studio. In case it doesnt work try to set Typescript language level to 2.0 under Inspection Tab from Resharper Options menu. Stackoverflow


Cheers. Happy Coding.

ASP.NET: Store Email Template in .NET

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Simple and Easy to edit way to store email templates in your .net project is string email body in html file.

Step 1: Create a HTML mail message

2016-10-04-16_04_18-_c__users_hassan-muhammad_desktop_new-14-html-notepad

Step 1(a): You can introduce as many as variable in HTML template by any character scheme (@PARAMETER@ or #PARAMETER# or $$PARAMETER$$). Replace all names/variables with things like #VaraibleName#
The confirmation number is: <b>#confirmNumber#</b>
Step 2: Right click on web project and select Properties from right click menu

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Step 3: Select Resources tab from left, choose Add Resource, select Add Existing File and choose appropriate html file

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Step 4: File will be visible in Resources display pan

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Step 5: For Server side C# code

You can refer to HTML email template from Properties.Resources.EmailTemplate. You can use it as a string. Replace the #PARAMETER# text with the actual values.

private void SendConfirmationEmail(string email, string confirmNumber)
{
    var emailBody = Properties.Resources.EmailTemplate.Replace("#confirmNumber#", confirmNumber);
    MailMessage message =
        new MailMessage
        {
            From =
            new MailAddress("Sender Email Address"),
            Subject = "Email Subject Content",
            Body = string.Format(emailBody),
            IsBodyHtml = true
        };
 
    message.To.Add(new MailAddress(email));
    SmtpClient client = new SmtpClient("11.111.111.11");
    client.Send(message);
}

WebClient vs HttpClient vs HttpWebRequest vs RestSharp

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HTTPWebRequest

This is the standard class that the .NET creators originally developed to consume HTTP requests. Using HttpWebRequest gives you control over every aspect of the request/response object, like timeouts, cookies, headers, protocols. Another great thing is that HttpWebRequest class does not block the user interface thread. For instance, while you’re downloading a big file from a sluggish API server, your application’s UI will remain responsive.

However, with great power comes great complexity. In order to make a simple GET you need at least five lines of code; we’ll see WebClient does it in two.

HttpWebRequest http = (HttpWebRequest)WebRequest.Create("http://example.com");
WebResponse response = http.GetResponse();

MemoryStream stream = response.GetResponseStream();
StreamReader sr = new StreamReader(stream);
string content = sr.ReadToEnd();

The number of ways you can make a mistake with HttpWebRequest is truly astounding. Only use HttpWebRequest if you require the additional low-level control that it offers.

WebClient

WebClient is a higher-level abstraction built on top of HttpWebRequest to simplify the most common tasks. Using WebClient is potentially slower (on the order of a few milliseconds) than using HttpWebRequest directly. But that “inefficiency” comes with huge benefits: it requires less code, is easier to use, and you’re less likely to make a mistake when using it. That same request example is now as simple as:

var client = new WebClient();
var text = client.DownloadString("http://example.com/page.html");

Note: the using statements from both examples were omitted for brevity. You should definitely dispose your web request objects properly.

HttpClient

httpclient

HttpClient provides powerful functionality with better syntax support for newer threading features, e.g. it supports the await keyword. It also enables threaded downloads of files with better compiler checking and code validation. For a complete listing of the advantages and features of this class make sure you read this SO answer.

The only downfall is that it requires .NET Framework 4.5, which many older or legacy machines might not have.

RestSharp

Since HttpClient is only available for the .NET 4.5 platform the community developed an alternative. Today, RestSharp is one of the only options for a portable, multi-platform, unencumbered, fully open-source HTTP client that you can use in all of your applications.

It combines the control of HttpWebRequest with the simplicity of WebClient.

 

Reference