Conditional formatting causing performance issues in workbook

eikogs

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Joined
Aug 12, 2016
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23
I have a workbook that I had intended to use Conditional Formatting to apply a 3 letter code as a prefix to a numerical value to indicate the currency being displayed. The code will change depending on the value of cell, “USD”, “EUR”, etc… I have 13 different codes in total, so there are 13 rules applied to many cells individually. I did it individually because there are some different colors and boarders on the cells and it was just easier to use the format painter and work through the sheet once rather than picking the cells on each of 13 rules. The conditional formatting alone works as expected, but it is have a significant impact on processing time of macros that run on the sheet. A macro that used to take 42 seconds now takes 62 seconds. That alone is tolerable, but the added time magnifies as this worksheet gets copied. It seems to be adding 20-30 seconds of processing time for each copy of this worksheet in the background, even though the macro does not touch the copies. I have tried shutting off calculations on the background copies, but it has no effect.

Is there another way that I can get a prefix in front of the numerical values that will not affect the performance of the workbook and can toggle values depending on the value of another cell? I do need the cell to keep its numerical value as they are dependents for other calculations.

I have tried changing calculations to manual, shutting off screen updating, even deleting all content from the sheets in question. Nothing puts a dent in the processing time except clearing the conditional formatting from the sheet.

I would estimate I have around 2500-3000 values on each worksheet that need this code.

How can I accomplish getting this 3 digit code to appear before my values without the negative impact on processing time? Is there a way to shut off formatting while processing, then turn it back on? Would it be more efficient to apply the rules to range instead of individually?

Thank you.
 

Excel Facts

Lock one reference in a formula
Need 1 part of a formula to always point to the same range? use $ signs: $V$2:$Z$99 will always point to V2:Z99, even after copying
I was able to find a working solution to my issue by using a cell style and redefining the format of the cell style based on a change event.

ActiveWorkbook.Styles("MyStyle").NumberFormat = "_(""USD ""$* #,##0.00_);_(""USD ""$* (#,##0.00);_(""USD ""$* ""-""_);_(@_)"
 
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