Screenupdating excel examples
When I started reading more into improving the efficiency of your code I understood what it was for but how much of an effect does Turning off screen updating will only make a difference to execution time if the code interacts with Excel in a way that causes changes to the screen content.
The grater the amount of screen changes the bigger the impact will be. Other application settings that can make a difference to execution time are Calculation and Event handling. Enable Events = False ' Code here Clean Up: On Error Resume Next Application. Calculation = xl Calculation Automatic Application. Enable Events = True Exit Sub EH: ' Do error handling Go To Clean Up End Sub Sub test Screen Updating() Dim i As Integer Dim numb Switches As Integer Dim results As String 'swap between sheets this number of times numb Switches = 1000 'keep track of time Dim start Time As Double start Time = Time 'swap between sheets 1/2 (need both sheets or this will crash) For i = 1 To numb Switches Sheets(1 (i Mod 2)).
Say, for example that you want to write some data to a sheet as fast as possible. RELEASE MEMORY ' turn on updates It depends on how much you are actually updating on the screen as part of your code, (i.e. Screen Updating = b Scrn Upd Exit Sub 'reset them even if you are exiting due to error lbl Error: Application. I set Screen Updating to false and it finished in less than 5 seconds.
You could do this: ' turn off updates ' Organise data in ram so that it fits the range for which it is meant Dim two_d_arr (rows,cols) load Data From Source two_d_arr Dim destination Range as Range destination Range = Sheets(some Sheet). number of cells updated), and how many sheets are there, how many sheets/cells refer to sheet your code is updating and how many formulas are present in the whole workbook. Screen Updating = False '-----------------------My code Application. Just make sure you reset Screen Updating to true when you're finished running the macro.
I have changed it slightly so it loops 10,000 times and I execute it 10 times for sample size.
Disabled Enabled 0.61909653 2.105066913 0.619555829 2.106865363 0.620805767 2.106866315 0.625528325 2.102403315 0.625319976 2.0991179 0.621287448 2.105103142 0.621540236 2.101392665 0.624537531 2.106866716 0.620401789 2.109004449 There is one important thing to know about screen updating which I didn’t see in any previous answer.
It is typically 5 to 10 times quicker (don’t catch me here it depends on what you really do) than VBA.
To turn off screen updating, use the following statement: The range is filled much faster, and you don’t see the result until the macro is finished running and screen updating is (automatically) set to True.
When you’re debugging code, program execution sometimes ends somewhere in the middle without your having turned Screen updating back on.
This sometimes causes Excel’s application window to become totally unresponsive.
The way out of this frozen state is simple: Go back to the VBE, and execute the following statement in the Immediate window: If you have a worksheet with many complex formulas, you may find that you can speed things considerably by setting the calculation mode to manual while your macro is executing.