In This Chapter
In the preceding chapter, I introduce you to Visual Basic for Applications (VBA); now it’s time to get better acquainted. This chapter discusses some of the key language elements and programming concepts in VBA.
Understanding VBA language elements, including variables, data types, constants, and arrays
Using VBA built-in functions
Manipulating objects and collections
Controlling the execution of your procedures
If you’ve used other programming languages, much of this information may sound familiar. VBA has a few unique wrinkles, however; so even experienced programmers may find some new information.
In Chapter 7, I present an overview of objects, properties, and methods, but I don’t tell you much about how to manipulate objects so that they do meaningful things. This chapter gently nudges you in that direction by exploring the VBA language elements, which are the keywords and control structures that you use to write VBA routines.
To get the ball rolling, I start by presenting a simple VBA
Sub procedure. The following code, which is stored in a VBA module, calculates the sum of the first 100 positive integers. When the code finishes executing, the procedure displays a message with the result.
Sub VBA_Demo() ' This is a simple VBA Example Dim Total As Integer, i As Integer Total = 0 For i = 1 To 100 Total = Total + i Next i MsgBox Total End Sub
This procedure uses some common VBA language elements, including: ...