Book Image

Hands-On Object-Oriented Programming with C#

By : Raihan Taher
Book Image

Hands-On Object-Oriented Programming with C#

By: Raihan Taher

Overview of this book

Object-oriented programming (OOP) is a programming paradigm organized around objects rather than actions, and data rather than logic. With the latest release of C#, you can look forward to new additions that improve object-oriented programming. This book will get you up to speed with OOP in C# in an engaging and interactive way. The book starts off by introducing you to C# language essentials and explaining OOP concepts through simple programs. You will then go on to learn how to use classes, interfacesm and properties to write pure OOP code in your applications. You will broaden your understanding of OOP further as you delve into some of the advanced features of the language, such as using events, delegates, and generics. Next, you will learn the secrets of writing good code by following design patterns and design principles. You'll also understand problem statements with their solutions and learn how to work with databases with the help of ADO.NET. Further on, you'll discover a chapter dedicated to the Git version control system. As you approach the conclusion, you'll be able to work through OOP-specific interview questions and understand how to tackle them. By the end of this book, you will have a good understanding of OOP with C# and be able to take your skills to the next level.
Table of Contents (16 chapters)

Multiple catch blocks

It's normal to get different types of exceptions in one try block. But how can you handle them? You should not use a general exception to do this. If you throw a general exception instead of throwing a specific exception, you might miss some important information about the exception. For this reason, the C# language introduced multiple catch blocks for a try block. You can specify one catch block that will be called for one type of exception, and you can create other catch blocks just after one-by-one with different exception types. When a specific exception is thrown, only that particular catch block will be executed if it has a dedicated catch block for that kind of exception. Let's look at an example:

using System;

class ManyCatchBlocks
{
public static void Main()
{
try
{
var a = 5;
var b = 0;
...