How to convert CSV file to Excel in VB.NET

EasyXLS Excel library can be used to convert 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 converts CSV file to Excel

Execute the following VB.NET code that converts CSV file to Excel.

' Tutorial 39
' This tutorial shows how to convert CSV file to Excel in VB.NET. The
' CSV file generated by Tutorial 30 is imported, some data is modified
' and after that is exported as Excel file.

Imports EasyXLS
Imports System.IO

Module Tutorial39

    Sub Main()

        Console.WriteLine("Tutorial 39" & vbCrLf & "----------" & vbCrLf)

       	' Create an instance of the class used to import/export Excel files
        Dim workbook As New ExcelDocument

        ' Import CSV file
        Console.WriteLine("Reading file C:\Samples\Tutorial30.csv." & vbCrLf)
        If (workbook.easy_LoadCSVFile("C:\Samples\Tutorial30.csv")) Then

            ' Set worksheet name
            workbook.easy_getSheetAt(0).setSheetName("First tab")

            ' Add new worksheet and add some data in cells (optional step)
            workbook.easy_addWorksheet("Second tab")
            Dim xlsSecondTab As ExcelWorksheet = workbook.easy_getSheetAt(1)
            Dim xlsTable = xlsSecondTab.easy_getExcelTable

            xlsTable.easy_getCell("A1").setValue("Data added by Tutorial39")

            For column As Integer = 0 To 4
                xlsTable.easy_getCell(1, column).setValue("Data " & (column + 1))

            ' Export Excel file
            Console.WriteLine(vbCrLf & "Writing file C:\Samples\Tutorial39 - convert CSV to Excel.xlsx.")
            workbook.easy_WriteXLSXFile("C:\Samples\Tutorial39 - convert CSV to Excel.xlsx")

            ' Confirm conversion of CSV to Excel
            Dim sError As String = workbook.easy_getError()
            If (sError.Equals("")) Then
                Console.Write(vbCrLf & "File successfully created.")
                Console.Write(vbCrLf & "Error encountered: " & sError)
            End If
            Console.WriteLine(vbCrLf & "Error reading file C:\Samples\Tutorial30.csv " & _
                              vbCrLf & workbook.easy_getError())
        End If

        ' Dispose memory

        Console.WriteLine(vbCrLf & "Press Enter to Exit...")
    End Sub

End Module

EasyXLS Excel libraries:

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

File formats:

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