Excel 2019 Power Programming with VBA. Michael Alexander
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Sub EnterDates3() ' Do Until, with test at beginning Dim TheDate As Date TheDate = DateSerial(Year(Date), Month(Date), 1) Do Until Month(TheDate) <> Month(Date) ActiveCell = TheDate TheDate = TheDate + 1 ActiveCell.Offset(1, 0).Activate Loop End Sub
Here is the second example:
Sub EnterDates4() ' Do Until, with test at end Dim TheDate As Date TheDate = DateSerial(Year(Date), Month(Date), 1) Do ActiveCell = TheDate TheDate = TheDate + 1s ActiveCell.Offset(1, 0).Activate Loop Until Month(TheDate) <> Month(Date) End Sub
The following example was originally presented for the Do While
loop but has been rewritten to use a Do Until
loop. The only difference is the line with the Do
statement. This example makes the code a bit clearer because it avoids the negative required in the Do While
example.
Sub DoUntilDemo1() Dim LineCt As Long Dim LineOfText As String Open "c:\data\textfile.txt" For Input As #1 LineCt = 0 Do Until EOF(1) Line Input #1, LineOfText Range("A1").Offset(LineCt, 0) = UCase(LineOfText) LineCt = LineCt + 1 Loop Close #1 End Sub
NOTE
VBA supports yet another type of loop, While Wend
. This looping structure is included primarily for compatibility purposes. Here's how the date entry procedure looks when it's coded to use a While Wend
loop:
Sub EnterDates5() Dim TheDate As Date TheDate = DateSerial(Year(Date), Month(Date), 1) While Month(TheDate) = Month(Date) ActiveCell = TheDate TheDate = TheDate + 1 ActiveCell.Offset(1, 0).Activate Wend End Sub
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