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Excel 2010: How to Protect a Worksheet

I have a worksheet that several people use.  I want to allow them to make entries on this worksheet because we all use it but I do not want them to be able change anything on the worksheet i.e. Delete prior data or a few formulas that I have in a couple of the cells already in the worksheet.  These cells should never be touched as they are automatic.    They also should not be able to delete prior entries made.

So in a nutshell:  

Be able to add data to a specified range of cells.

Cannot delete prior data i.e. They can't go back to last week entries on the spreadsheet and delete those.

Formula cells protected.

Any help with this is greatly appreciated.
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itsmevic
Asked:
itsmevic
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4 Solutions
 
webtechgalCommented:
I think you want to protect cells of previous data, but not the whole worksheet?

Take a look at this resource -

http://spreadsheetpage.com/index.php/tip/spreadsheet_protection_faq1/
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clarkscottCommented:
I wrote a routine that locks worksheet cells determined by their backcolor.
For instance, all user edited cells are green background.
On the event WORKSHEET - SELECTIONCHANGE....


'---- this example says to lock the cell if the background is white---
If Range(Target.address).interior.color =  16777215 then
       Selection.locked = true
else
       Selection.locked = false
end if


As the user moves from cell to cell, the cell is locked if it's white.

Scott C
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redmondbCommented:
Hi, itsmevic.

Please see attached as a proof of concept. I'm sure that it's too aggressive about protecting earlier data - once the user has filled all data on a row and then selects the next line, the "filled" data cells are locked and those on the new line are unlocked.

So, a couple of requests, please...
(1) What are the rules for which earlier rows the user is allowed to change?
(2) Which columns are the users allowed to enter data into and which columns have the formulas?

Thanks,
Brian.Add-Only.xlsm
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clarkscottCommented:
Here's a quick example of my lock scheme.
Please view Sheet1.  You many change any WHITE cell.  You can't change the green ones.

The code is in the sheet1 - selectionchange event

Scott C
Lock-Test.xls
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redmondbCommented:
Thanks, itsmevic.

For the sake of others who may want to do similar things, what did you go with in the end?

Thanks,
Brian.
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