Name
Dim Statement
Syntax
Dimvarname
[([subscripts
])],varname
[([subscripts
])]
varname
Use: Required
Your chosen name for the variable.
subscripts
Use: Optional
Dimensions of an array variable.
Description
Declares and allocates storage space in memory for variables.
The Dim
statement is used either
at the start of a procedure or the start of a global script block.
In the first case, the variable declared using Dim
is local to the procedure. In the
second, it’s available throughout the module.
Rules at a Glance
You can declare multiple variables in a single
Dim
statement, as long as you use a comma to delimit them.When variables are first initialized with the
Dim
statement, they have a value of Empty. In addition, if a variable has been initialized but not assigned a value, the following expressions will both evaluate toTrue
:If vVar = 0 Then If vVar = "" Then
To declare array variables, use the following syntax:
- Fixed length, single dimension
Dim
arrayname
(
upper
)
Example:
Dim
myArray(10)
- Fixed length, multidimensional
Dim
arrayname
(
upper
,
upper
,
...)
Example:
Dim
MyArray(20,30)
- Variable length, single or multidimensional
Dim
arrayname
( )
Example:
Dim
myArray( )
You can declare a multidimensional array with up to 60 dimensions.
Variable-length arrays can be resized using the
ReDim
statement. Fixed-length arrays can’t be resized.
Example
The example shows how to use the Dim
statement to define a variable that
receives an array returned by a function:
Dim Input, NumArray Input = InputBox("Enter three ...
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