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Use Worksheet Functions wherever applicable Do read full article to understand the logic behind them.
o In Microsoft Office Excel 2003 and in earlier versions of Excel, we click Page Setup on the File menu.
On the eve before Christmas, I'm writing this article on VBA code optimization for my blog readers as a gift. For example, a macro that required several seconds to complete in an earlier version of Excel may require several minutes to complete in a later version of Excel.
It contains both the knowledge and good practices which if followed and used effectively then it might put you in elite category of excellent VBA programmers. This problem may occur if the following conditions are true: * The VBA macro modifies the properties of many rows or columns.
We rarely fire an event for each cell we're changing via code.
Enable Events to tell VBA processor whether to fire events or not.
It is annoying for VBA processor as it needs to fully qualify the object each time. This concept tells us to use [A1] rather than Range("A1") and Range("Stock Range")(3,4) rather than Range("Stock Range").
(Isn't it annoying for us too when some work or something is told us again and again? The point here to understand is minimum qualifying of an object by VBA processor. Cells(3,4) Use vb Null String instead of ""(2 double quotes) : vb Null String is slightly faster than "", since vb Null String is not actually a string, but a constant set to 0 bytes, whereas "" is a string consuming at least 4-6 bytes for just existence.
Screen Updating = The Screen Updating property controls most display changes on the monitor while a procedure is running.
Avoid 'Screen Flickering' or 'Screen Repainting': Use Application.
So streamline your program logic and get the best performance of macros.
Calculation = xl Calculation Manual Stop Events: Use Application.
You may turn off the automatic calculation using Application.
When we combine multiple lines using colon into one line, we're reducing the number of fetch cycles the processor must go through.