Book Image

Programming Microsoft Dynamics NAV 2009

Book Image

Programming Microsoft Dynamics NAV 2009

Overview of this book

Microsoft Dynamics NAV is a well established Enterprise Resource Planning (ERP) application, part of the Microsoft Dynamics family. Dynamics NAV is installed worldwide, with well over one million users. Version 2009 contains many major new features and structures, requiring even experienced Dynamics NAV developers to refresh their NAV development knowledge. Renowned for its challenging learning curve, Dynamics NAV is a complex piece of software with a unique design structure. For developers learning to modify or enhance Dynamics NAV for vital business purposes, the task can sometimes be intimidating. This book is an in-depth step-by-step guide to programming NAV, designed to ease you through the complexities of NAV application development. You will learn the skills and develop the confidence to tackle your own critical NAV applications. This book will act as your experienced NAV programming mentor, helping you to become productive as a NAV developer much more quickly. NAV development is quite complex, with a steep learning curve. This book makes it easy for you. From basic NAV terminology and concept definitions, through the essential building blocks of NAV data structure and objects, you will gain an understanding of the fundamental underlying concepts of NAV. You will learn practical details about NAV object construction and the tools available, including table, page, and report design. You will learn how to use NAV's tools to effectively navigate through the various features of objects, including properties, triggers, and C/AL code, and receive practical guidance on ways to develop and test in the unique NAV C/SIDE development environment. Extensive guidance on software design for NAV is provided along with tips for efficient design of new NAV applications or enhancing existing applications. With its comprehensive collection of NAV information and distillation of years of NAV development experience, this book is not only designed to help you learn, but to act as a reference as well.
Table of Contents (18 chapters)
Programming Microsoft® Dynamics™ NAV 2009
Credits
About the Author
Acknowledgement
About the Reviewers
Foreword
Preface
Index

Multi-currency system


NAV was one of the first ERP systems to fully implement a multi-currency system. Transactions can start in one currency and finish in another. For example, you can create the order in US dollars and accept payment for the invoice in Euros. For this reason, where there are money values, they are generally stored in the local currency (for example LCY) as defined in setup. However, there is a set of currency conversion tools built into the applications and there are standard (by practice) code structures to support and utilize those tools. Two examples of code segments from the Sales Line table illustrating handling of money fields follow:

In both cases, there's a function call to ROUND and use of the currency specific Currency. "Amount Rounding Precision" control value.

As you can see, before creating any modification that has money fields, you must familiarize yourself with the NAV currency conversion feature and the code that supports it. A good place to start is the...