Extensively revised to accommodate all the latest features that come with C# 10 and .NET 6, this latest edition of our comprehensive guide will get you coding in C# with confidence.
You’ll learn object-oriented programming, writing, testing, and debugging functions, implementing interfaces, and inheriting classes. The book covers the .NET APIs for performing tasks like managing and querying data, monitoring and improving performance, and working with the filesystem, async streams, and serialization. You’ll build and deploy cross-platform apps, such as websites and services using ASP.NET Core.
Instead of distracting you with unnecessary application code, the first twelve chapters will teach you about C# language constructs and many of the .NET libraries through simple console applications. In later chapters, having mastered the basics, you’ll then build practical applications and services using ASP.NET Core, the Model-View-Controller (MVC) pattern, and Blazor.
Related Content you might be interested in
Current Title:
C# 10 and .NET 6 – Modern Cross-Platform Development - Sixth Edition
Casting between types is subtly different from converting between types. Casting is between similar types, like between a 16-bit integer and a 32-bit integer, or between a superclass and one of its subclasses. Converting is between dissimilar types, such as between text and a number.
Implicit casting
In the previous example, you saw how an instance of a derived type can be stored in a variable of its base type (or its base's base type, and so on). When we do this, it is called implicit casting.
Explicit casting
Going the other way is an explicit cast, and you must use parentheses around the type you want to cast into as a prefix to do it:
In Program.cs, add a statement to assign the aliceInPerson variable to a new Employee variable, as shown in the following code:
Employee explicitAlice = aliceInPerson;
Your coding tool displays a red squiggle and a compile error, as shown in Figure 6.5:
...
