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Excel 2013 Power Programming with VBA by John Walkenbach

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Chapter 7: Working with VBA Sub Procedures

In This Chapter

• Declaring and creating VBA Sub procedures

• Executing procedures

• Passing arguments to a procedure

• Using error-handling techniques

• An example of developing a useful procedure

About Procedures

A procedure is a series of VBA statements that resides in a VBA module, which you access in Visual Basic Editor (VBE). A module can hold any number of procedures. A procedure holds a group of VBA statements that accomplishes a desired task. Most VBA code is contained in procedures.

You have a number of ways to call, or execute, procedures. A procedure is executed from beginning to end, but it can also be ended prematurely.

tip.eps

A procedure can be any length, but many people prefer to avoid creating extremely long procedures that perform many different operations. You may find it easier to write several smaller procedures, each with a single purpose. Then, design a main procedure that calls those other procedures. This approach can make your code easier to maintain.

Some procedures are written to receive arguments. An argument is information that is used by the procedure and that is passed to the procedure when it is executed. Procedure arguments work much like the arguments that you use in Excel worksheet functions. Instructions within the procedure perform operations using these arguments, and the results of the procedure are ...

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