EasyXLS

How to add formulas in cells in VB.NET

EasyXLS Excel library can be used to export Excel files in VB.NET. The library works with .NET Framework or .NET Core platform.

Step 1: Download and install EasyXLS Excel Library for .NET

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

Download EasyXLS™ Excel Library for VB.NET

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

Step 2: Create a VB.NET project

If don't have a project, create one as ASP.NET web application, windows forms app, console application, class library or service.

Step 3: Include EasyXLS library into project

EasyXLS.dll must be added as reference to your project. EasyXLS.dll can be found after installing EasyXLS, in "Dot NET version" folder.

Add EasyXLS reference

Step 4: Run VB.NET code that adds formula to Excel cell

Execute the following VB.NET code that exports an Excel file with formulas.

'---------------------------------------------------------------
' Tutorial 11
'
' This tutorial shows how to create an Excel file in VB.NET that
' has a cell that contains SUM formula for a range of cells.
' --------------------------------------------------------------

Imports EasyXLS

Module Tutorial11

    Sub Main()

        Console.WriteLine("Tutorial 11" & vbCrLf & "----------" & vbCrLf)

        ' Create an instance of the class that exports Excel files
        Dim workbook As New ExcelDocument

        ' Create a sheet
        workbook.easy_addWorksheet("Formula")

        ' Get the table of data for the sheet, add data in sheet and the formula
        Dim xlsFirstTab As ExcelWorksheet = workbook.easy_getSheet("Formula")
        Dim xlsTable = xlsFirstTab.easy_getExcelTable()
        xlsTable.easy_getCell("A1").setValue("1")
        xlsTable.easy_getCell("A2").setValue("2")
        xlsTable.easy_getCell("A3").setValue("3")
        xlsTable.easy_getCell("A4").setValue("4")
        xlsTable.easy_getCell("A6").setValue("=SUM(A1:A4)")

        ' Export Excel file
        Console.WriteLine("Writing file C:\Samples\Tutorial11 - formulas in Excel.xlsx.")
        workbook.easy_WriteXLSXFile("C:\Samples\Tutorial11 - formulas in Excel.xlsx")

        ' Confirm export of Excel file
        Dim sError As String = workbook.easy_getError()
        If (sError.Equals("")) Then
            Console.Write(vbCrLf & "File successfully created. Press Enter to Exit...")
        Else
            Console.Write(vbCrLf & "Error encountered: " & sError & vbCrLf & "Press Enter to Exit...")
        End If
        
        ' Dispose memory
        workbook.Dispose()
        
        Console.ReadLine()

    End Sub

End Module

EasyXLS Excel libraries:

.NET
Excel Library for VB.NET
full .NET version to import, export or convert Excel files
Excel Writer for VB.NET
.NET version to create and export Excel files
Download EasyXLS™ Excel Library for VB.NET

File formats:

MS Excel 97 - 2003
MS Excel 2007 - 2010
MS Excel 2013
MS Excel 2016
MS Excel 2019
XLSXXLSMXLSBXLS
XMLHTMLCSVTXT