excel - Unmerge merged cell when empty -

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i'm trying code right fail @ point: have excel sheet merges cell 1 underneath depending on value that's written in top cell, when value deleted merged cell i'd cells unmerge. try work sub keep code bit clean (don't know proper rules try) : 

public sub letitmerge(target object)       if target.value = empty               call unmergecell(target)               else               if (target.value = vv call mergecell(target)       end if   end sub sub unmergecell(m object)     m.resize(1, 1).unmerge     m.borders(xlinsidehorizontal).linestyle = xllinestyle.xlcontinuous end sub sub mergecell(n object)         n.resize(2).merge                   'merge cells         n.verticalalignment = xlcenter      'center text         n.horizontalalignment = xlcenter    'center text end sub

a few minor tweaks code, appears working me.

the worksheet_change event fires time there change on worksheet. based on value of changed cell, run either of unmerge or mergecell subroutines.

public sub worksheet_change(byval target range)     'use target.cells(1) since merged cell.'     if target.cells(1).value = vbnullstring             call unmergecell(target)     else             if target.value = vv call mergecell(target)     end if end sub  sub unmergecell(m range)     m.resize(1, 1).unmerge     m.borders(xlinsidehorizontal).linestyle = xllinestyle.xlcontinuous end sub  sub mergecell(n range)         n.resize(2).merge                   'merge cells         n.verticalalignment = xlcenter      'center text         n.horizontalalignment = xlcenter    'center text end sub

update #1

if have multiple worksheets, can put above code in standard code module, , rename sub worksheet_change(... else sub letitmerge(target range)

then, in each worksheet's code module, still need change event macro each worksheet, this:

sub worksheet_change(byval target range)     letitmerge target end sub

so now, _change event on each worksheet trigger letitmerge routine, determines of unmerge or mergecells subroutines execute.


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