By Bipin Joshi

This publication teaches you all of the crucial wisdom required to benefit and observe time-proven reliable ideas of object-oriented layout and critical layout styles in ASP.NET five functions. you are going to learn how to write server-side in addition to client-side code that uses confirmed practices and styles. stable is an acronym used to explain 5 uncomplicated rules of fine object-oriented layout - unmarried accountability, Open/Closed, Liskov Substitution, Interface Segregation and Dependency Inversion. This e-book covers all 5 ideas and illustrates how they are often utilized in ASP.NET five functions. layout styles are time confirmed suggestions to quite often happening software program layout difficulties. the main recognized catalog of layout styles comes from Erich Gamma, Richard Helm, Ralph Johnson and John Vlissides, the so-called GoF styles (Gang of 4 patterns). This ebook includes distinct descriptions of the way to use Creational, Structural and Behavioral GoF layout styles besides a few styles of company program structure.

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Extra resources for Beginning SOLID Principles and Design Patterns for ASP.NET Developers

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Make sure to change the data source and security settings of the connection string as per your setup. cs file. This file contains a class—Startup—whose skeleton is shown in Listing 1-10. Listing 1-10. Skeleton of Startup Class public class Startup { public void ConfigureServices(IServiceCollection services) { } public void Configure(IApplicationBuilder app) { ... Run(args); } The Startup class contains the following items: • ConfigureServices: This method is invoked by the framework. This is where you specify what services your application needs.

Figure 1-17 shows the generated ContactDb database and the Contacts table in SQL Server Object Explorer. info CHAPTER 1 ■ OVERVIEW OF SOLID PRINCIPLES AND DESIGN PATTERNS Figure 1-17. ContactDb database and Contacts table Notice how data annotations such as [Table], [DatabaseGenerated], [Required], and [StringLength] are utilized while creating the Contacts table. The columns are marked as “not null” due to the [Required] attribute, and their lengths are decided by the [StringLength] attribute.

Any small change you need will result in your changing this single class. And since you changed the class, you will also need to test it again. If you follow SRP, your classes will become compact and neat—each is responsible for a single problem, task, or concern. This way a change in the system requires a change in the corresponding class, and only that class needs to be tested again. SRP is a way to divide the whole problem into small parts, and each part will be dealt with by a separate class.

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