Tip

Secure Microsoft Excel spreadsheets with LotusScript

Want to protect Microsoft Excel spreadsheets from tampering? This LotusScript code only allows users to edit columns that you specify as permitted. Other columns can be locked programmatically, and the Microsoft Excel file will be protected with a password. The only way for the secured columns to be edited is for the user to know the password and edit them after entering it.

'Setting the Excel object.  
 
Set ExcelApp = CreateObject("Excel.Application")
Set ExcelWorkbook = 
ExcelApp.Workbooks.Open("C:TempTest.xls") 
Set ExcelWorksheet = 
ExcelWorkbook.Application.Workbooks(1).Worksheets(1)
' You can enter the values and once 
the entry is over lock the columns.
With ExcelWorksheet 
' .Range("A1:B1").Select
.Range("A1").Value ="Prasad"
.Range("B1").Value ="Lekshmi"
.Range("A1:B1").Locked=True
.Range("A2:A10").Locked=False  
End With
ExcelWorksheet.Protect Password="1234" 
'  You just need one line to protect excel sheet from tampering.
ExcelWorkbook.Save
ExcelApp.quit  
Set ExcelApp=Nothing

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This was first published in February 2007

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