55340AC Developing ASP.NET Core Web Applications

Course description

In this course, professional web developers will learn how to develop advanced ASP.NET Core applications using .NET tools and technologies. The focus will be on coding activities that improve website application performance and scalability.


Audience profile

This course is intended for professional web developers using Microsoft Visual Studio in a small to large development environment, individually or in teams. Candidates for this course are interested in developing advanced web applications and want to manage rendered HTML holistically. They want to build websites that separate the user interface, data access, and application logic. Server-side development will use the C# language and is a great follow-up to our C# Programming course. Client-side development will make use of JavaScript, CSS, and HTML5, for which there is also a corresponding introductory course.



  • Understand the Microsoft web technology stack and choose which technology to use when building an app.
  • Design a web application that meets a set of business and functional requirements.
  • Build a website with ASP.NET Core Razor Pages.
  • Use middleware and dependency injection in ASP.NET Core MVC applications.
  • Use controllers in an MVC application to manage user interaction, models, and views.
  • Build web apps that use ASP.NET Core routing to provide a logical navigation hierarchy.
  • Create views to display and edit data in an MVC application.
  • Build MVC models that implement business logic within methods, properties, and events.
  • Access a database from an ASP.NET Core application using Entity Framework Core.
  • Design and create a consistent look and feel in a web application.
  • Use JavaScript code to implement client-side logic to improve the responsiveness of an ASP.NET web application.
  • Use a development toolchain to manage client-side packages.
  • Create unit tests and use debugging tools against a web application in Visual Studio.
  • Use authentication and authorization libraries to manage identity and allow users to access content securely.
  • Design secure web applications that are protected against common attacks.
    Improve web application performance by implementing caching.
  • Enable bidirectional asynchronous communication between the client and the server using SignalR.
  • Add web APIs to an app to support communication between apps.


Course outline

Module 1: Exploring ASP.NET Core

Microsoft ASP.NET Core web technologies can help you build and host dynamic, powerful, and extensible web applications. ASP.NET Core is an open source, cross-platform framework based on .NET that allows you to build web applications. You can develop and run ASP.NET Core web apps on Windows, macOS, Linux, or any other platform that supports it. ASP.NET Core supports an agile, test-driven development cycle. It also allows you to use the latest HTML standards and front-end frameworks like Angular, React, and more.


  • Introduction to Microsoft web technologies
  • Get started with Razor Pages in ASP.NET Core
  • Introducing ASP.NET Core MVC

Lab 1: Exploring ASP.NET Core

  • Exploring ASP.NET Core
After completing this module, students will be able to:
  • Understand the variety of technologies available in the Microsoft web stack.
  • Describe the different programming models available to developers in ASP.NET.
  • Describe the role of ASP.NET Core in the web technology stack and how to use ASP.NET Core to build web applications.

Module 2: Designing ASP.NET Core MVC Web Applications

Microsoft ASP.NET Core is a programming model that you can use to build powerful and complex web applications. However, all complex development projects, and large projects in particular, can be challenging and intricate to fully understand. Without a full understanding of the purposes of a project, you cannot develop an effective solution to the client's problem. You need to know how to identify a set of business needs and then make technology decisions and plan your web application to meet those needs. The planning phase assures stakeholders that you understand their requirements and communicates the functionality of the web application, its user interface, structure, and data storage to developers.


  • development methodologies
  • Planning in the Design Phase of the Project
  • Choosing between Razor Pages and MVC
  • Design of models, controllers and views

Lab 1: Designing ASP.NET Core MVC Web Applications

  • ASP.NET Core MVC Web Application Design
After completing this module, students will be able to:
  • Plan the overall architecture of an ASP.NET Core MVC web application and consider things like state management.
  • Plan the models, controllers, and views that are required to implement a given set of functional requirements.

Module 3: Using Razor Pages and Middleware

ASP.NET Core is a framework that allows us to build many types of applications. In this module, we'll first take a closer look at ASP.NET Razor Pages, as a quick way to build a web application that doesn't require the complexity of the MVC model. Then we'll look at middleware, which has particular meaning in the context of the ASP.NET Core request pipeline, potentially allowing multiple independent requests to be handled in a completely different way and receive independent responses. You'll learn how to take advantage of the ASP.NET Core framework to handle requests and responses through existing and custom middleware, and how to configure services for use in the middleware and in other parts of the application, such as controllers. We will also see the Services; classes that expose functionality that you can then use in different parts of the application. This is accomplished without having to manually track the scope at each individual location, or instantiate any dependencies, by using Dependency Injection. Dependency injection is a technique used by ASP.NET Core that allows us to add dependencies to code without having to worry about instantiating objects, keeping them in memory, or passing required dependencies.


  • Using Razor Pages
  • Middleware Configuration
  • Services Configuration

Lab 1: Using Razor Pages and Middleware

  • Use of Razor Pages and Middleware
After completing this module, students will be able to:
  • Create a simple web app with Razor Pages.
  • Use existing middleware to set up an ASP.NET Core app.
  • Understand the basic principles behind dependency injection and how it's used in ASP.NET Core.

Module 4: Developing Controllers

ASP.NET Core MVC is a framework for building web applications using the Model-View-Controller (MVC) architectural pattern. The controller is essentially responsible for processing a web request by interacting with the model and then passing the results back to the view. The model represents the business layer and can include data objects, application logic, and business rules. The View uses the data it receives from the controller to produce the HTML or other output that is sent back to the browser. In this module we will focus on developing controllers, specialized classes that are fundamental to MVC applications. Understanding how controllers work is critical to being able to create the appropriate model objects, manipulate them, and pass them to the appropriate views. Controllers have several methods that are called "actions". When an MVC application receives a request, it finds which controller and which action should handle the request. It determines this by using Uniform Resource Locator (URL) routing; another very important concept needed to develop MVC applications. We'll also see how to maximize code reuse in controllers by writing action filters.


  • Writing Controllers and Actions
  • route configuration
  • Write action filters

Lab 1: Developing Controllers

  • drivers under development
After completing this module, students will be able to:
  • Add a controller to a web application that responds to user actions that are specified in the project layout.
  • Add routes to the ASP.NET Core routing engine and make sure URLs are easy to use in an MVC web app.
  • Write code in action filters that runs before or after a controller action.

Module 5: Developing views

Views are one of the three main components of the Model-View-Controller (MVC) programming model. You can define the user interface for your web application by creating views; a combination of HTML markup and C# code that runs on a web server. To create a view, you must know how to write HTML markup and C# code and use the various helper classes built into MVC. You also need to know how to create partial views and view components, which represent sections of HTML that can be reused in your web application. We'll also take a closer look at Razor's markup syntax for embedding .NET-based code in web pages.


  • Creating views with Razor syntax
  • Uso de HTML Helpers y Tag Helpers
  • Code reuse in views

Lab 1: Developing views

  • view development
After completing this module, students will be able to:
  • Create an MVC view and add Razor markup to it to display data to users.
  • Use HTML helpers and tag helpers in a view.
  • Reuse Razor markup in multiple locations throughout an app.

Module 6: Model development

Most web applications interact with various types of data or objects. An e-commerce application, for example, manages products, shopping carts, customers, and orders. A social networking app can help manage users, status updates, comments, photos, and videos. A blog is used to manage blog posts, comments, categories, and tags. When you write a Model-View-Controller (MVC) web application, you create an MVC model to model the data for your web application. Inside this model, create a model class for each type of object. The model class describes the properties of each type of object and can include business logic that matches business processes. Therefore, the model is a fundamental building block in an MVC application. We'll also look at validating user input.


  • Creating MVC models
  • work with forms
  • Validation of user input

Lab 1: Model Development

  • Model development
After completing this module, students will be able to:
  • Add a model to an MVC application and write code in it to implement business logic.
  • Use show and edit data annotations.
  • Validate user input with data annotations.

Module 7: Using the Entity Framework Core in ASP.NET Core

Web applications often require a data store for dynamic information, for example, to create a web application that continually changes in response to user input, administrative actions, and publish events. The data store is usually a database, but other types of data stores are also used. In Model-View-Controller (MVC) applications, you can create a model that implements data access logic and business logic. Alternatively, you can separate business logic from data access logic by using a repository class that a controller can use to read or write to an underlying data store. When you write an ASP.NET application, you can use Entity Framework Core (EF Core) and Language Integrated Query (LINQ) technologies, which make data access code very fast to write and easy to understand. In this module,


  • Introduction to Entity Framework Core
  • Working with Entity Framework Core
  • Using Entity Framework Core Database Providers

Lab 1 - Using the Entity Framework Core in ASP.NET Core

  • Uso de Entity Framework Core en ASP.NET Core
After completing this module, students will be able to:
  • Connect an application to a database to access and store data.
  • Explain EF Core.
  • Work with Entity Framework Core.

Module 8: Using Layouts, CSS, and JavaScript in ASP.NET Core

When building web applications, you must apply a uniform appearance to the application. Typically, you would include consistent header and footer sections and navigation controls across all views. Microsoft ASP.NET Core uses special templates called layouts to accomplish this, along with Cascading Style Sheets (CSS) to improve the appearance and usability of your web application. You can also create interactive HTML elements using JavaScript to provide client-side code in your web application, along with client-side JavaScript libraries.


  • Use of designs
  • Using CSS
  • Using JavaScript

Lab 1 - Using Layouts, CSS, and JavaScript in ASP.NET Core

  • Using layouts, CSS, and JavaScript in ASP.NET Core
After completing this module, students will be able to:
  • Apply a consistent design to ASP.NET Core MVC applications.
  • Add JavaScript code to your web application.
  • Use CSS style sheets.

Module 9: Client Side Development

When building an application, it's important to know how to develop the client-side and server-side code for the application. In this module, you'll learn client-side tools that allow you to build complex web applications at any scale, including using the Bootstrap CSS framework to style your web application. You'll learn how to use Sass, a CSS preprocessor that adds code-like features such as variables, nested rules, and functions that improve maintainability of complex CSS style sheets. You will learn responsive design principles that will allow you to adapt your web application based on the capabilities of the web browser or device using CSS media queries and how to use a responsive grid system. Next, You'll learn how to configure the gulp task runner and use it to compile Sass files at build time and perform bundling and minification of CSS and JavaScript files, and how to configure a watchdog task to automatically compile Sass files as you write your code. Finally, we'll introduce the Blazor framework for building an interactive client-side web UI with .NET.


  • Responsive web design
  • Use of front-end development tools
  • Looking at ASP.NET Core Blazor

Lab 1: Client-side development

  • Client Side Development
After completing this module, students will be able to:
  • Use Bootstrap and SASS in a Microsoft ASP.NET Core app.
  • Use front-end development tools.
  • Make sure a web app displays correctly on devices with different screen sizes.
  • Understanding ASP.NET Core Blazor apps

Module 10: Testing and Troubleshooting

The software development process inevitably results in coding errors or failures that result in exceptions, unexpected behavior, or incorrect results. To improve the quality of your web application and provide a good user experience, you must identify errors from any source and eliminate them. In traditional software development, most testing is done by testers at the end of a development project. However, in recent years it has been widely accepted that testing throughout the project life cycle improves code quality and greatly reduces the number of bugs in production software. You need to understand how to run tests on individual components to ensure they work as expected before assembling them into a complete web application. It's also important that you know how to handle exceptions when they occur and handle them correctly to provide proper user feedback, without leaking information about the application's structure. Finally, by using application-wide logging, you can monitor user activities that could lead to unexpected problems and troubleshoot production issues by tracing flows through the application.


  • Test ASP.NET Core apps
  • Implementing an Exception Handling Strategy
  • ASP.NET Core Application Registration

Lab 1: Testing and Troubleshooting

  • Testing and troubleshooting
After completing this module, students will be able to:
  • Run unit tests to verify code and locate potential bugs.
  • Create a Microsoft ASP.NET Core app that provides robust exception handling.
  • In the application registration for your solutions.

Module 11: Security management

Applications are typically delivered via a web browser, over the public Internet, to a large number of users. This means that security should always be at the forefront when building these applications, as in addition to legitimate users, the application will be exposed to malicious third parties. Users can have anonymous access or they can have a logged in identity, and you must decide which users can perform which actions. Authentication is the act of establishing a user's identity, while authorization is the process in which an already authenticated user is granted access to specific actions or resources. By using authorization, you can prevent users from accessing confidential material or information and resources intended for another user or prevent them from performing certain actions. The costs of security breaches can be very high, resulting in data loss, legal action, and reputational damage. Therefore, in the final section, we will look at some specific malicious attacks, such as cross-site scripting and SQL injection, and how to defend against them.


  • Authentication in ASP.NET Core
  • Authorization in ASP.NET Core
  • Defend against common attacks

Lab 1: Security Management

  • manage security
After completing this module, students will be able to:
  • basic authentication to your application.
  • Configure the Microsoft ASP.NET core identity.
  • Add basic authorization to your app.
  • Understand how security exploits work and how to best defend against them

Module 12: Performance and Communication

Modern web applications must be able to respond quickly to a large number of user requests in a short period of time. Caching allows you to store common requests, avoiding the need to perform the same logic repeatedly. This provides the user with a fast response time and reduces the system resources used to carry out the action logic. By using various forms of state management, you can build stateful applications on top of stateless web protocols, giving responses tailored to the contexts of individual users within the same application. Finally, SignalR is an easy-to-use two-way communications API that is an abstraction of several different web communications protocols. This allows you to create server-side logic to deliver content to browser-based web applications in real time.


  • Implementing a caching strategy
  • admin state
  • Two-way communication support

Laboratory 1: Performance and Communication

  • Performance and Communication
After completing this module, students will be able to:
  • Implement caching in a Microsoft ASP.NET Core app.
  • Use state management technologies to improve the customer experience by providing a consistent user experience.
  • Implement two-way communication using SignalR, which allows the server to notify the client when important events occur.

Module 13: Web API Implementation

Most web applications require integration with external systems. Representational State Transfer (REST) ​​services help reduce application overhead and limit the data that is passed between client and server systems using open standards. You should know how to expose a web API that implements REST services in your ASP.NET application. You also need to know how to call a web API using server-side and client-side code to consume external REST-style web APIs.


  • Introduction to web APIs
  • Developing a web API
  • Call a web API

Lab 1: Web API Implementation

  • Web API Implementation
After completing this module, students will be able to:
  • Create services using the ASP.NET Core Web API.
  • Call a web API from server-side code.
  • Call a web API from client-side code.


Previous requirements

  • Experience with Microsoft Visual Studio and .NET.
  • Understand C# programming and concepts such as lambda expressions, asynchronous programming, and LINQ.
  • Some web development experience using HTML, CSS and JavaScript.
    Understanding of common data formats such as JSON and XML.



  • English course

  • Labs: English