How to create conditional formatting in VB6

EasyXLS Excel library can be used to export Excel files in VB6. The library is a COM+ component that works without MS Excel installed.

Step 1: Download and install EasyXLS Excel Library for COM+

To download the trial version of EasyXLS Excel Library, press the below button:

Download EasyXLS™ Excel Library for VB6

If you already own a license key, you may login and download EasyXLS from your account.

Step 2: Verify if EasyXLS is registered

Check if EasyXLS component is present in Component Services.

Step 3: License file setup

Step required for EasyXLS v9.0 or later.

If you are using a trial, generate a trial license file from EasyXLS trials page. The trial license is valid for 30-days.

If you own a license key, you may login to the account that purchased the license and generate the license file from:

Setup the license file into your project using these guidelines.

Step 4: Run VB6 code that creates conditional formatting in Excel cells

Execute the following VB6 code that exports an Excel file and sets conditional formatting to a range. The first step is to set the range where the conditional formatting will be applied, then set the formatting options.

' Tutorial 14
' This tutorial shows how to create an Excel file in VB6 having
' a sheet and conditional formatting for cell ranges.

Begin VB.Form Form1 
    Caption         =   "Form1"
    ClientHeight    =   4590
    ClientLeft      =   60
    ClientTop       =   345
    ClientWidth     =   6885
    LinkTopic       =   "Form1"
    ScaleHeight     =   4590
    ScaleWidth      =   6885
    StartUpPosition =   3
    Begin VB.Label Label1 
        AutoSize        =   -1
        Height          =   100
        Left            =   120
        TabIndex        =   0
        Top             =   120
        Width           =   100

Attribute VB_Name = "Form1"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False

Private Sub Form_Load()


    Me.Label1.Caption = "Tutorial 14" & vbCrLf & "-----------------" & vbCrLf

    ' Create an instance of the class that exports Excel files
    Set workbook = CreateObject("EasyXLS.ExcelDocument")

    ' Create a sheet
    workbook.easy_addWorksheet_2 ("Sheet1")

    ' Get the table of data for the first worksheet
    Set xlsTab = workbook.easy_getSheet("Sheet1")
    Set xlsTable = xlsTab.easy_getExcelTable()

    ' Add data in cells
    For i = 0 To 5
        For j = 0 To 3
            If ((i < 2) And (j < 2)) Then
                xlsTable.easy_getCell(i, j).setValue ("12")
                If ((j = 2) And (i < 2)) Then
                    xlsTable.easy_getCell(i, j).setValue ("1000")
                    xlsTable.easy_getCell(i, j).setValue ("9")
                End If
            End If
            xlsTable.easy_getCell(i, j).setDataType (DataType.DATATYPE_NUMERIC)

    ' Set conditional formatting
    xlsTab.easy_addConditionalFormatting_5 "A1:C3", _
            "=9", "=11", True, True, CLng(Color.COLOR_RED)

    ' Set another conditional formatting
    xlsTab.easy_addConditionalFormatting_9 "A6:C6", _
            "=COS(PI())+2", "", CLng(Color.COLOR_BISQUE)
    xlsTab.easy_getConditionalFormattingAt_2("A6:C6").getConditionAt(0).setConditionType ( _

    ' Export Excel file
    Me.Label1.Caption = Me.Label1.Caption & vbCrLf & _
                           "Writing file C:\Samples\Tutorial14 - conditional formatting in Excel.xlsx"
    workbook.easy_WriteXLSXFile ("C:\Samples\Tutorial14 - conditional formatting in Excel.xlsx")

    ' Confirm export of Excel file
    If workbook.easy_getError() = "" Then
        Me.Label1.Caption = Me.Label1.Caption & vbCrLf & "File successfully created."
        Me.Label1.Caption = Me.Label1.Caption & vbCrLf & "Error: " & workbook.easy_getError()
    End If

    ' Dispose memory
End Sub

Overloaded methods
For methods with same name but different parameters, only the first method overload retains the original name. Subsequent overloads are uniquely renamed by appending to the method name '_2', '_3', etc (method, method_2, method_3), an integer that corresponds to the order of declaration that can be found in EasyXLS.h, a file that comes with EasyXLS installation.

EasyXLS Excel components:

Excel Library for VB6
full COM+ version to import, export or convert Excel files
Excel Writer for VB6
COM+ version to create and export Excel files
Download EasyXLS™ Excel Component for VB6

File formats:

MS Excel 97 - 2003
MS Excel 2007 - 2019
MS Excel 2021
Office 365