Speed Up Vba Code With Application Screenupdating False

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The Power of Application.ScreenUpdating = False

When working with VBA code in Excel, performance can become a significant issue, especially when dealing with large datasets or complex operations. One simple yet effective way to speed up your VBA code is to use Application.ScreenUpdating = False. In this article, we'll explore what this setting does, how it can improve performance, and provide practical examples to help you get the most out of this feature.

What is Application.ScreenUpdating?

Application.ScreenUpdating is a property of the Excel Application object that determines whether Excel updates the screen display while a macro is running. By default, this property is set to True, which means that Excel updates the screen display after each operation, allowing the user to see the changes as they happen.

How does Application.ScreenUpdating = False improve performance?

When Application.ScreenUpdating is set to False, Excel does not update the screen display during the execution of a macro. This means that Excel can focus on processing the code without the overhead of updating the screen, resulting in a significant performance boost.

By turning off screen updating, you can:

• Reduce the time it takes to execute a macro
• Improve responsiveness and reduce lag
• Minimize the impact of screen flicker and flashing

When to use Application.ScreenUpdating = False

You should use Application.ScreenUpdating = False in the following situations:

• When working with large datasets or complex operations
• When executing macros that involve many iterations or loops
• When performing tasks that require a high level of precision and speed
• When working with Excel models that are sensitive to screen updates

Best practices for using Application.ScreenUpdating = False

To get the most out of Application.ScreenUpdating = False, follow these best practices:

• Always set Application.ScreenUpdating to False at the beginning of your macro
• Set Application.ScreenUpdating to True at the end of your macro to ensure the screen is updated before the macro completes
• Use this setting in conjunction with other performance-enhancing techniques, such as Application.Calculation = xlCalculationManual and Application.StatusBar = False
• Avoid using Application.ScreenUpdating = False when working with user interfaces or interactive macros, as it can make the macro appear unresponsive

Example code

Here's an example code snippet that demonstrates the use of Application.ScreenUpdating = False:

Sub MyMacro()
    ' Set ScreenUpdating to False
    Application.ScreenUpdating = False
    
    ' Perform some complex operations
    For i = 1 To 100000
        Range("A" & i).Value = i
    Next i
    
    ' Set ScreenUpdating to True
    Application.ScreenUpdating = True
End Sub

In this example, we set Application.ScreenUpdating to False before performing a complex operation (a loop that writes values to a range). We then set Application.ScreenUpdating to True after the operation completes to ensure the screen is updated.

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