Book Image

Programming in C#: Exam 70-483 (MCSD) Guide

By : Simaranjit Singh Bhalla, SrinivasMadhav Gorthi
Book Image

Programming in C#: Exam 70-483 (MCSD) Guide

By: Simaranjit Singh Bhalla, SrinivasMadhav Gorthi

Overview of this book

Programming in C# is a certification from Microsoft that measures the ability of developers to use the power of C# in decision making and creating business logic. This book is a certification guide that equips you with the skills that you need to crack this exam and promote your problem-solving acumen with C#. The book has been designed as preparation material for the Microsoft specialization exam in C#. It contains examples spanning the main focus areas of the certification exam, such as debugging and securing applications, and managing an application's code base, among others. This book will be full of scenarios that demand decision-making skills and require a thorough knowledge of C# concepts. You will learn how to develop business logic for your application types in C#. This book is exam-oriented, considering all the patterns for Microsoft certifications and practical solutions to challenges from Microsoft-certified authors. By the time you've finished this book, you will have had sufficient practice solving real-world application development problems with C# and will be able to carry your newly-learned skills to crack the Microsoft certification exam to level up your career.
Table of Contents (22 chapters)
17
Mock Test 1
18
Mock Test 2
19
Mock Test 3

Understanding language features that make LINQ possible

There are several features available in C# that are either necessary for the implementation of LINQ or that help us effectively use LINQ queries. These are some of the topics that we will be going through in this chapter:

  • Implicitly typed variables
  • Object initialization syntax
  • Lambda expressions
  • Extension methods
  • Anonymous types

Implicitly typed variables

In C#, we generally use statically typed variables. This implies that the compiler knows the type of variable at compile time. Due to this, if it finds any operation that may result in an error, it will highlight it at compile time. For example, refer to the following code:

 int i = 1;
FileStream f = new FileStream...