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Programming Excel with VBA and .NET
book

Programming Excel with VBA and .NET

by Jeff Webb, Steve Saunders
April 2006
Beginner
1114 pages
98h 16m
English
O'Reilly Media, Inc.
Content preview from Programming Excel with VBA and .NET

Types of Applications

You can create three different types of applications from within Excel. Which type you choose determines how the application is used and distributed:

Workbooks

Package code as part of a unique document. The code is stored with the workbook file (.xls) and is available whenever the user opens that file in Excel. If the user copies the file, the code is copied along with the rest of the workbook.

Templates

Include code as part of a template for new Excel workbooks. When a user creates a new workbook file (.xls) from the template (.xlt), the code contained in the template is available in that new workbook though the code is not actually copied to the workbook.

Add-ins

Include code as a file that can be loaded into the Excel application. If a user loads an add-in file (.xla), code from that add-in is available for any workbook a user opens.

Table 6-1 describes the relative advantages of these different types of applications.

Table 6-1. Ways to distribute code in Excel

Code stored in

Available to

Advantage

Disadvantage

Workbook (.xls)

Currently loaded workbooks

No installation required; easy to distribute.

Updates are difficult because the workbooks may be copied/renamed and there’s no way to merge new code.

Template (.xlt)

Workbooks based on the template

Single file; code applies to specific type of workbook.

Templates must be installed.

Add-in (.xla)

All workbooks

Single file; code most widely available.

Add-ins must be installed; don’t include ...

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Publisher Resources

ISBN: 0596007663Errata Page