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ASP.NET Core: Cloud-ready,
Enterprise Web Application
Development
Create fast, scalable, and high performance
applications with C# and ASP.NET Core
A course in three modules
BIRMINGHAM - MUMBAI
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ASP.NET Core: Cloud-ready, Enterprise Web Application Development
Copyright © 2017 Packt Publishing
All rights reserved. No part of this course may be reproduced, stored in a retrieval system,
or transmitted in any form or by any means, without the prior written permission of the
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Every effort has been made in the preparation of this course to ensure the accuracy of the
information presented. However, the information contained in this course is sold without
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dealers and distributors will be held liable for any damages caused or alleged to be caused
directly or indirectly by this course.
Packt Publishing has endeavored to provide trademark information about all of the
companies and products mentioned in this course by the appropriate use of capitals.
However, Packt Publishing cannot guarantee the accuracy of this information.
Published on: June 2017
Production reference: 1020617
Published by Packt Publishing Ltd.
Livery Place
35 Livery Street
Birmingham B3 2PB, UK.
ISBN-13P 978-1-78829-652-6
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Credits
Author Content Development Editor
Mugilan T. S. Ragupathi Kinnari Sanghvi
Valerio De Sanctis
James Singleton
Reviewers Graphics
Anuraj Parameswaran Abhinash Sahu
Mustafa Erhan Ersoy
Anand Ranjan Pandey
Production Coordinator
Vincent Maverick Durano
Shraddha Falebhai
Jason De Oliveira
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Table of Contents
Preface
1
Chapter 1:
7
Module 1 7
Learning ASP.NET Core MVC Programming 7
Chapter 2: Introduction to ASP.NET Core
8
How web applications work 8
So what is an HTTP protocol? 9
Request-response pattern 9
Stateless nature of HTTP 10
Client-side and server-side 11
HTTP methods 12
GET method 13
POST method 14
What is ASP.NET? 14
ASP.NET Web Forms 15
ASP.NET Web Pages 16
ASP.NET MVC 16
Features of ASP.NET MVC 17
Convention over configuration 17
Separation of concerns 18
Control over the generated HTML 18
Better support for unit testing 18
ASP.NET 5 19
Features of ASP.NET 5 20
Summary 20
Chapter 3: Setting Up the Environment
21
Purpose of IDE 21
Visual Studio offerings 22
System requirements 22
Visual Studio Community 2015 22
Visual Studio Professional 23
Visual Studio Enterprise 23
Visual Studio Test Professional 23
Installing Visual Studio Community 24
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Installing ASP.NET 5 28
Project structure in ASP.NET 5 application 32
File-based project 33
Support for full .NET and .NET core 33
The Project.json package 34
Controllers 34
Models 34
Views 34
Migrations 34
The wwwroot folder 35
Other files 35
Summary 35
Chapter 4: Controllers
36
Role of the Controller in ASP.NET MVC applications 37
Introduction to routing 38
Creating ASP.NET 5 application 41
Installing the ASP.NET Core NuGet package in your application 45
Our first Controller 48
IActionResult 52
Adding Views 52
Adding Models 55
Passing data from Controller to View 57
Filters 58
Authorization filters 59
Resource filters 60
Action filters 60
Exception filters 60
Result filters 60
Summary 60
Chapter 5: Views
61
The View engine and the Razor View engine 61
Razor View engine 61
Programming in Razor View engine 62
Variables in Razor View 62
The for loop 64
The while loop 65
The foreach loop 65
The if condition 65
Layout 66
Creating _ViewStart.cshtml 68
Creating _Layout.cshtml 68
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Adding a page-specific View 69
Generating HTML 71
HTML Helpers 73
Partial View 76
Calling the Partial View 79
View components 79
Creating a View component 79
Tag Helpers 84
Creating custom Tag Helpers 87
Summary 91
Chapter 6: Models
92
Models 92
Models specific to a View component 98
Note on ViewModels 98
Data flow with respect to a Model 99
Model binding 100
The Entity Framework 101
The Entity Framework is independent of ASP.NET MVC 102
Creating console applications with the Entity Framework 103
Installing the Entity Framework 7 NuGet package 103
Using the NuGet Package Manager 104
Using the Package Manager Console 107
Installing Entity Framework commands 109
Creating Model classes 110
Creating the DbContext class 110
Create a migration 111
How the SaveChanges method works 116
Updating the record 116
Deleting the record 117
Using the Entity Framework in ASP.NET MVC applications 118
Database migration 127
Summary 130
Chapter 7: Validation
131
Client-side and server-side validation 132
Server-side validation 134
Updating View models with the Data Annotation attribute 135
Updating the View model to display the validation error message 136
Updating the controller action method to verify the model state 137
Client-side validation 139
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Implementation 143
Summary 146
Chapter 8: Routing
147
Convention-based routing 147
Example 1 148
Example 2 149
Example 3 149
Example 4 149
Attribute-based routing 152
Route attribute at the controller level 154
Passing routing values in HTTP action verbs in the Controller 155
Route Constraints 156
Summary 156
Chapter 9: Beautifying ASP.NET MVC Applications with Bootstrap
157
Knowing HTML and CSS 157
Bootstrap 162
Bootstrap Grid system 162
Forms 163
Inline forms 164
Horizontal forms 165
Table CSS classes 166
Striped tables 166
Hover tables 167
Bordered tables 167
Contextual classes in table 168
Buttons 169
Button sizes 170
Contextual colors 170
Using Bootstrap in your ASP.NET MVC application 171
Installing with Bower 173
HTML doctype 174
Summary 177
Chapter 10: Deployment of ASP.NET Core Application
178
The project.json file 181
The dependencies node 181
The frameworks node 182
Microsoft Azure 182
Signing up to Microsoft Azure 183
Prerequisites to Azure deployment 191
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Deploying the ASP.NET Core application in Azure 193
Deploying the ASP.NET Core web application in the Linux
environment 210
Creating a Linux machine 211
Installing the PuTTY client 220
Installing of .NET Core in a Linux machine 226
Creating a new ASP.NET 5 project 229
Configuring the Nginx server 233
Summary 235
Chapter 11: Building HTTP-based Web Services Using ASP.NET Web
API
236
HTTP basics 237
HTTP verbs 238
GET method 238
PUT method 239
POST method 239
DELETE method 240
Fiddler tool 240
Dependency Injection 250
Delete method 260
The Web API method for deleting a resource 260
Web Repository layer code for deleting the employee data 260
Summary 261
Chapter 12: Improving Performance of an ASP.NET Core Application
262
The UI layer 265
Reducing the number of HTTP requests 265
Using GZip compression 269
Using the Content Delivery Network (CDN) 269
Using JavaScript wherever possible 270
Using CSS stylesheets 270
Minification of JavaScript and CSS files and their combination 272
The caching process 275
Client-side caching 276
Response caching 277
The web/application layer 279
No business logic in Views 279
Using asynchronous logging 280
The DB layer 280
Understanding the queries generated by the ORM 280
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Using classic ADO.NET if you really want to 281
Return only the required data 281
Fine tuning the indices 282
Using the correct column type and size for your database columns 282
Avoiding correlated subqueries 282
Generic performance improvement tips 282
Avoiding the Response.Redirect method 283
Using string builder 283
Summary 283
Chapter 13: ASP.NET Core Identity
284
Authentication 284
Authorization 285
Adding the relevant dependencies to the project.json file 286
Adding ApplicationUser and ApplicationDbContext classes 287
Configuring the application to use Identity 288
Creating ViewModels 290
Creating Controllers and associated action methods 291
Creating Views 292
E-mail and SMS services 297
Securing an action method in a Controller 298
Summary 301
Chapter 14:
302
Module 2 302
ASP.NET Core and Angular 2 302
Chapter 15: Getting Ready
303
Two players one goal 304
What's new in Angular 2? 304
The ASP.NET Core revolution 305
The field of choice – single-page application 306
Common features of a competitive SPA 306
Product owner expectations 307
A sample single-page application project 309
The vision 310
Core requirements 311
Preparing the workspace 312
Setting up the project 312
Package and resource managers 315
Installing the packages 316
NuGet and ASP.NET 316
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