Book Image

C# 7 and .NET: Designing Modern Cross-platform Applications

By : Mark J. Price, Ovais Mehboob Ahmed Khan
Book Image

C# 7 and .NET: Designing Modern Cross-platform Applications

By: Mark J. Price, Ovais Mehboob Ahmed Khan

Overview of this book

C# is a widely used programming language, thanks to its easy learning curve, versatility, and support for modern paradigms. The language is used to create desktop apps, background services, web apps, and mobile apps. .NET Core is open source and compatible with Mac OS and Linux. There is no limit to what you can achieve with C# and .NET Core. This Learning Path begins with the basics of C# and object-oriented programming (OOP) and explores features of C#, such as tuples, pattern matching, and out variables. You will understand.NET Standard 2.0 class libraries and ASP.NET Core 2.0, and create professional websites, services, and applications. You will become familiar with mobile app development using Xamarin.Forms and learn to develop high-performing applications by writing optimized code with various profiling techniques. By the end of C# 7 and .NET: Designing Modern Cross-platform Applications, you will have all the knowledge required to build modern, cross-platform apps using C# and .NET. This Learning Path includes content from the following Packt products: • C# 7.1 and .NET Core 2.0 - Modern Cross-Platform Development - Third Edition by Mark J. Price • C# 7 and .NET Core 2.0 High Performance by Ovais Mehboob Ahmed Khan
Table of Contents (25 chapters)
Title Page
About Packt
Designing Guidelines for .NET Core Application Performance

Making types more reusable with generics

In 2005, with C# and .NET Framework 2.0, Microsoft introduced a feature named generics that enables your types to be more reusable, by allowing a programmer to pass types as parameters similar to how you can pass objects as parameters.

Making a generic type

First, let's see an example of a non-generic type, so that you can understand the problem that generics is designed to solve.

In the PacktLibrary project, add a new class named Thing, as shown in the following code, and note the following:

  • Thing has a field named Data of the object type
  • Thing has a method named Process that accepts an input parameter of the string type, and returns a string value


If we wanted the Thing type to be flexible in .NET Framework 1.0, we would have to use the object type for the field.

using System;

namespace Packt.CS7
   public class Thing
      public object Data = default(object);

      public string Process(string input)
         if (Data == input)...