Professional.Crystal.Reports.for.Visual.Studio..NET [Electronic resources] نسخه متنی

Variable Declarations

Before we can use a variable in a formula, it has to be declared. Basic and Crystal Syntax both have different ways of declaring variables, based on the type and scope of the variable. The most common variable declarations are included below:

Basic

Crystal

Dim x
n/a

Dim x ()
n/a

Dim x As Boolean
Local BooleanVar x

Dim x As Number
Local NumberVar x

Dim x As Currency
Local CurrencyVar x

Dim x As Date
Local DateVar x

Dim x As Time
Local TimeVar x

Dim x As DateTime
Local DateTimeVar x

Dim x As String
Local StringVar x

Dim x As Number Range
Local NumberVar range x

Dim x As Currency Range
Local CurrencyVar range x

Dim x As Date Range
Local DateVar range x

Dim x As Time Range
Local TimeVar range x

Dim x As DateTime Range
Local DateTimeVar range x

Dim x As String Range
Local StringVar range x

Dim x () As Boolean
Local BooleanVar array x

Dim x () As Number
Local NumberVar array x

Dim x () As Currency
Local CurrencyVar array x

Dim x () As Date
Local DateVar array x

Dim x () As Time
Local TimeVar array x

Dim x () As DateTime
Local DateTimeVar array x

Dim x () As String
Local StringVar array x

Dim x () As Number Range
Local NumberVar range array x

Dim x () As Currency Range
Local CurrencyVar range array x

Dim x () As Date Range
Local DateVar range array x

Dim x () As Time Range
Local TimeVar range array x

Dim x () As DateTime Range
Local DateTimeVar range array x

Dim x () As String Range
Local StringVar range array x



To select a scope for variables created in Basic syntax, you can use the following scope attributes in place of the Dim statement:

Local - The variable is specific and can only be used in the formula in which it is defined.

Global - The variable is available to formulas throughout the entire current report.

Shared - The variable can be shared with a subreport as well as the entire current report.

Note

Dim is equivalent to using "Local".