To download the trial version of EasyXLS Excel Library, press the below button:
If you already own a license key, you may login and download EasyXLS from your account.
Install the downloaded EasyXLS installer for v8.6 or earlier.
Step 2: 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: https://www.easyxls.com/my-orders
Setup the license file into your project using these guidelines.
Step 3: 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 4: Include EasyXLS library into project
EasyXLS.dll must be added as reference to your project. EasyXLS.dll can be found: - Inside the downloaded archive at Step 1 for EasyXLS v9.0 or later - Under installation path for EasyXLS v8.6 or earlier, in "Dot NET version" folder.
Step 5: Run VB.NET code that adds cell validation to Excel sheet
Execute the following VB.NET code that exports an Excel file with two types of data validation defined: list and whole number.
'-----------------------------------------------------------------
' Tutorial 13
'
' This tutorial shows how to create an Excel file in VB.NET having
' multiple sheets. The second sheet contains a named area range.
' The A1:A10 cell range contains data validators, drop down list
' and whole number validation.
' ----------------------------------------------------------------Imports EasyXLS
Imports EasyXLS.Constants
Module Tutorial13
Sub Main()
Console.WriteLine("Tutorial 13" & vbCrLf & "----------" & vbCrLf)
' Create an instance of the class that exports Excel files, having two sheetsDim workbook As New ExcelDocument(2)
' Set the sheet names
workbook.easy_getSheetAt(0).setSheetName("First tab")
workbook.easy_getSheetAt(1).setSheetName("Second tab")
' Get the table of data for the second worksheet and populate the worksheetDim xlsSecondTab As ExcelWorksheet = workbook.easy_getSheetAt(1)
Dim xlsSecondTable = xlsSecondTab.easy_getExcelTable()
xlsSecondTable.easy_getCell("A1").setValue("Range data 1")
xlsSecondTable.easy_getCell("A2").setValue("Range data 2")
xlsSecondTable.easy_getCell("A3").setValue("Range data 3")
xlsSecondTable.easy_getCell("A4").setValue("Range data 4")
' Create a named area range
xlsSecondTab.easy_addName("Range", "=Second tab!$A$1:$A$4")
' Add data validation as drop down list typeDim xlsFirstTab As ExcelWorksheet = workbook.easy_getSheetAt(0)
xlsFirstTab.easy_addDataValidator("A1:A10", DataValidator.VALIDATE_LIST, _
DataValidator.OPERATOR_EQUAL_TO, "=Range", "")
' Add data validation as whole number type
xlsFirstTab.easy_addDataValidator("B1:B10", DataValidator.VALIDATE_WHOLE_NUMBER, _
DataValidator.OPERATOR_BETWEEN, "=4", "=100")
' Export Excel file
Console.WriteLine("Writing file C:\Samples\Tutorial13 - cell validation in Excel.xlsx.")
workbook.easy_WriteXLSXFile("C:\Samples\Tutorial13 - cell validation in Excel.xlsx")
' Confirm export of Excel fileDim 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
