Book Image

NHibernate 2 Beginner's Guide

By : Aaron Cure
Book Image

NHibernate 2 Beginner's Guide

By: Aaron Cure

Overview of this book

<p>NHibernate is an open source object-relational mapper, or simply put, a way to retrieve data from your database into standard .NET objects. Quite often we spend hours designing the database, only to go back and re-design a mechanism to access that data and then optimize that mechanism. This book will save you time on your project, providing all the information along with concrete examples about the use and optimization of NHibernate.<br /><br />This book is an approachable, detailed introduction to the NHibernate object-relational mapper and how to integrate it with your .NET projects. If you're tired of writing stored procedures or maintaining inline SQL, this is the book for you.<br /><br />Connecting to a database to retrieve data is a major part of nearly every project, from websites to desktop applications to distributed applications. Using the techniques presented in this book, you can access data in your own database with little or no code.<br /><br />This book covers the use of NHibernate from a first glance at retrieving data and developing access layers to more advanced topics such as optimization and Security and Membership providers. It will show you how to connect to multiple databases and speed up your web applications using strong caching tools. We also discuss the use of third-party tools for code generation and other tricks to make your development smoother, quicker, and more effective.</p>
Table of Contents (19 chapters)
NHibernate 2
Credits
About the Author
About the Reviewers
Preface
Index

Time for action – creating our first class


In order for NHibernate to automatically fill data into our classes, we need to have some classes for it to fill! Let's start out by creating our OrderHeader class to map the OrderHeader data into.

  1. In a new instance of Visual Studio, select File | New | Project, as shown in the following screenshot:

  2. The New Project dialog will appear. If you are working in C#, select Visual C#, then Windows, and click on Class Library, as shown in the following screenshot:

  3. If you are a VB programmer, select Visual Basic, Windows, Class Library, as shown in the following screenshot:

  4. Enter Ordering.Data in the Name: textbox, and Ordering in the Solution Name: textbox. Make sure you leave the Create directory for solution checked.

  5. This will give us a new DLL project called Ordering.Data inside a folder named Ordering, which contains a solution named Ordering. When you're done with it, the folder structure should look similar to the one shown in the following screenshot...