vba - How to make a specific cell in excel uneditable -

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my problem trying make cell cannot edited users after inputs given. example want let user input cell c22-c28 after user inputs cell, specific cell shouldn't edited. should best solution this? suggestions?

take @ question how lock data in cell in excel using vba

where multiple nice answers. in basic, need set range .locked , protect sheet via .protect, more develop info try @ msdn

edit: can use mentioned in question (restricting user delete cell contents)

without lock , unlock, can use this. have there 1 global variable store selection value (to preserve beforechange state). function selectionchange, updating value of current cell, can restore cell value after users try.

sub worksheet_change controling, if user targeting specified row , column (can adjusted whole range), , if try change value, prompted , value set back.

dim prevvalue variant  private sub worksheet_selectionchange(byval target range)      prevvalue = target.value  end sub  private sub worksheet_change(byval target range)        if target.row = 5 , target.column = 5          if target.value <> prevvalue             target.value = prevvalue               msgbox "you not allowed edit!", vbcritical + vbokonly          end if      end if   end sub

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