Do Until Loop

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Do Until Loop, Repeat a Block of VBA Macro Code

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Do UntilLoop

There are 2 ways a Do Until loop can be used in Excel VBA Macro code. You can tell Excel to check the condition before entering the loop, or tell Excel to enter the loop and then check the condition. Note To stop an endless loop, press ESC or CTRL+BREAK. To force an exit from a Do Until loop you use the line: Exit Do, e.g. If lNum = 7 Then Exit Do

In the first example (Check_First) the condition (lNum=10) is checked before entering the loop.

In the second example (Check_After) the condition (lNum=10) is checked after entering the loop.

Sub Check_First()
Dim lCount As Long
Dim lNum As Long

    lCount = 0
    lNum = 10
    Do Until lNum = 10
        lNum = lNum - 1
        lCount = lCount + 1
    Loop
    MsgBox "The Do While loop made " & lCount & " loop(s)."
End Sub


Sub Check_After()
Dim lCount As Long
Dim lNum As Long

    lCount = 0
    lNum = 11
    Do
        lNum = lNum - 1
        lCount = lCount + 1
    Loop Until lNum = 10
    MsgBox "The Do Until loop made " & lCount & " loop(s)."
End Sub

Do Loops

Syntax
Do [{While | Until} condition]
[statements]
[Exit Do]
[statements]
Loop

Or, you can use this syntax:
Do
[statements]
[Exit Do]
[statements]
Loop [{While | Until} condition]

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