Book Image

.NET Design Patterns

By : Praseed Pai, Shine Xavier
Book Image

.NET Design Patterns

By: Praseed Pai, Shine Xavier

Overview of this book

Knowing about design patterns enables developers to improve their code base, promoting code reuse and making their design more robust. This book focuses on the practical aspects of programming in .NET. You will learn about some of the relevant design patterns (and their application) that are most widely used. We start with classic object-oriented programming (OOP) techniques, evaluate parallel programming and concurrency models, enhance implementations by mixing OOP and functional programming, and finally to the reactive programming model where functional programming and OOP are used in synergy to write better code. Throughout this book, we’ll show you how to deal with architecture/design techniques, GoF patterns, relevant patterns from other catalogs, functional programming, and reactive programming techniques. After reading this book, you will be able to convincingly leverage these design patterns (factory pattern, builder pattern, prototype pattern, adapter pattern, facade pattern, decorator pattern, observer pattern and so on) for your programs. You will also be able to write fluid functional code in .NET that would leverage concurrency and parallelism!
Table of Contents (22 chapters)
.NET Design Patterns
Credits
Foreword
About the Authors
About the Reviewers
www.PacktPub.com
Customer Feedback
Preface

iTextSharp for the PDF output


To produce the output of a document in the PDF format, we plan to use the .NET version of the open source iText library.

Note

The library can be downloaded from the iTextSharp website at the following address: https://www.nuget.org/packages/iTextSharp/.

A simple program, which produces a PDF document using the library, is given next to make the reader understand the programming model of this library:

    using iTextSharp; 
    using iTextSharp.text; 
    using iTextSharp.text.pdf; 
    //------some code omitted 
    FileStream fs = new FileStream(@"D:\ab\fund.pdf",   
    FileMode.Create); 
    Document document = new Document(PageSize.A4, 25, 25, 30, 30); 
    PdfWriter writer = PdfWriter.GetInstance(document, fs); 
    document.AddAuthor("Praseed Pai"); 
    document.AddCreator("iTextSharp PDF Library"); 
    document.AddTitle("PDF Demo"); 
    document.Open(); 
    PdfPTable table = new PdfPTable(2)...