ComponentOne Reports for WinForms Designer Edition: ComponentOne Reports for WinForms > Working with C1Report > Working with VBScript > VBScript Elements, Objects, and Variables

VBScript Elements, Objects, and Variables

The following tables detail VBScript elements, objects, and variables.

Operators

The following table contains the VBScript operators:

 

Operator

Description

And

Performs a logical conjunction on two expressions.

Or

Performs a logical disjunction on two expressions.

Not

Performs a logical disjunction on two expressions.

Mod

Divides two numbers and returns only the remainder.

Reserved symbols

The following table contains the VBScript reserved symbols and how to use them:

 

Keyword

Description

True

The True keyword has a value equal to -1.

False

The False keyword has a value equal to 0.

Nothing

Used to disassociate an object variable from any actual object. To assign Nothing to an object variable, use the Set statement, for example:

Set MyObject = Nothing

Several object variables can refer to the same actual object. When Nothing is assigned to an object variable, that variable no longer refers to any actual object. When several object variables refer to the same object, memory and system resources associated with the object to which the variables refer are released only after all of them have been set to Nothing, either explicitly using Set, or implicitly after the last object variable set to Nothing.

Null

The Null keyword is used to indicate that a variable contains no valid data.

vbCr

When you call print and display functions, you can use the following constants in your code in place of the actual values.

vbCrLf

When you call print and display functions, you can use the following constants in your code in place of the actual values.

vbLf

When you call print and display functions, you can use the following constants in your code in place of the actual values.

vbFormFeed

When you call print and display functions, you can use the following constants in your code in place of the actual values.

vbNewLine

When you call print and display functions, you can use the following constants in your code in place of the actual values.

vbNullChar

When you call print and display functions, you can use the following constants in your code in place of the actual values.

vbTab

When you call print and display functions, you can use the following constants in your code in place of the actual values.

vbVerticalTab

When you call print and display functions, you can use the following constants in your code in place of the actual values.

vbBlack

Black. Value = 0x0.

vbRed

Red. Value = 0xFF.

vbGreen

Green. Value = 0xFF00.

vbYellow

Yellow. Value = 0xFFFF.

vbBlue

Blue. Value = 0xFF0000.

vbMagenta

Magenta. Value = 0xFF00FF.

vbCyan

Cyan. Value = 0xFFFF00.

vbWhite

White. Value = 0xFFFFFF.

Built-in functions

The VBScript built-in functions are listed below:

 

Abs

Date

Iif

Minute

Sign

Acos

DateAdd

InputBox

Month

Space

Asc

DateDiff

InStr

MonthName

Sqr

Asin

DatePart

InStrRev

MsgBox

StrComp

Atn

DateSerial

Int

Now

String

CBool

DateValue

IsDate

Oct

Tan

CByte

Day

IsEmpty

Pi

Time

CCur

Exp

IsNull

Replace

Timer

CDate

Fix

IsNumeric

RGB

TimeSerial

CDbl

Format

IsObject

Right

TimeValue

Chr

FormatCurrency

LCase

Rnd

Trim

CInt

FormatDateTime

Left

Round

TypeName

CLng

FormatNumber

Len

RTrim

UCase

Cos

FormatPercent

Log

Second

WeekDay

CSng

Hex

LTrim

Sgn

WeekDayName

CStr

Hour

Mid

Sin

Year

 

For more information on the VBScript functions, see the MSDN documentation. Note that the following VBScript features are not supported in C1Report:

      Arrays

      Functions/Subs

      Select/Case statements

Also note that the following C1Report features are not part of VBScript:

      Aggregate functions (Sum, Average, StDev, Var, Count, and so on)

      Report and Database field names

      Page/Pages variables

      Report object

Statement keywords

The VBScript statement keywords are listed below:

 

If

ElseIf

To

While

Dim

Then

EndIf

Next

Wend

Redim

Else

For

Step

Const

 

Report Field Names

Names of Field objects are evaluated and return a reference to the object, so you can access the field's properties. The default property for the Field object is Value, so by itself the field name returns the field's current value. For example:

      Visual Basic

MyField.BackColor = RGB(200,250,100)

MyField.Font.Size = 14

MyField * 2 ' (same as MyField.Value * 2)

      C#

MyField.BackColor = RGB(200,250,100);

MyField.Font.Size = 14;

MyField * 2; // (same as MyField.value * 2)

Note: If you give a report field the same name as a database field, you won't be able to access the report field.

Report Section Names

Names of Section objects are evaluated and return a reference to the object, so you can access the section's properties. The default property for the Section object is Name. For example:

      Visual Basic

If Page = 1 Then [Page Footer].Visible = False

      C#

if (Page = 1)

{

    [Page Footer].Visible = false;

}

Database Field Names

Names of fields in the report's dataset source are evaluated and return the current field value. If a field name contains spaces or periods, it must be enclosed in square brackets. For example:

OrderID

UnitsInStock

[Customer.FirstName]

[Name With Spaces]

Report Variables

Page

The page variable returns or sets the value of the Page property. This property is initialized by the control when it starts rendering a report, and is incremented at each page break. You may reset it using code. For example:

      Visual Basic

If Country <> LastCountry Then Page = 1

LastCountry = Country

      C#

if (Country != LastCountry)

{

    Page = 1

}

else

{

    LastCountry = Country;

}

Pages

The pages variable returns a token that gets replaced with the total page count when the report finishes rendering. This is a read-only property that is typically used in page header or footer fields. For example:

      Visual Basic

"Page " & Page & " of " & Pages

      C#

"Page " + Page + " of " + Pages;

Report Object

The report object returns a reference to the control object, so you can access the full C1Report object model from your scripts and expressions. For example:

      Visual Basic

"Fields: " & Report.Fields.Count

      C#

"Fields: " + Report.Fields.Count;

Cancel

Set Cancel to True to cancel the report rendering process. For example:

      Visual Basic

If Page > 100 Then Cancel = True

      C#

if ( Page > 100 )

{

    Cancel = true;

}


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