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Extending Microsoft Dynamics NAV 2016 Cookbook

You're reading from  Extending Microsoft Dynamics NAV 2016 Cookbook

Product type Book
Published in Jan 2017
Publisher Packt
ISBN-13 9781786460608
Pages 458 pages
Edition 1st Edition
Languages
Author (1):
Alexander Drogin Alexander Drogin
Profile icon Alexander Drogin

Table of Contents (17) Chapters

Extending Microsoft Dynamics NAV 2016 Cookbook
Credits
About the Author
About the Reviewer
www.PacktPub.com
Customer Feedback
Preface
1. Writing Basic C/AL Code 2. Advanced C/AL Development 3. Reporting and Data Analysis 4. .NET Interoperability in C/AL 5. Extending C/AL with COM Components 6. SharePoint Integration 7. Control Add-ins 8. Web Services 9. Events and Extension Packages 10. PowerShell

Referencing records and fields via RecordRef and FieldRef


The NAV datatype Record provides an interface to tables in the database. A certain limitation of the Record type is that a declaration of a Record variable is fixed in design time. Each variable must be linked to a table in the object design, and the link cannot be changed dynamically.

An alternative to static linking is the RecordRef datatype. A variable of RecordRef type is assigned to a specific table at runtime, but dynamics linking leads to higher complexity of code.

How to do it...

The RecordRef and FieldRef datatypes will be used to write a function comparing two records from the same table.

  1. Create a codeunit in the object designer and declare a local function CompareRecords in the codeunit. This is the function that will do the comparison. Set the function's return type to Boolean.

  2. Access the C/AL Locals in the function CompareRecords, declare a parameter RecRef of type RecordRef. After that, open the parameter properties and set...

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