Do While vs. Do until

[André]

Hey guys, I have somewhere read the we shouldn't use
Do While but Do Until,

Did you know that? do you know why?

André

[BruceG]

I haven't heard that, as both constructs are useful depending on what you want to do. Maybe you read that we should shy away from the "While/Wend" construct because it only remains in the language for backwards compatibility and has been replaced by "Do While/Loop".

[dimava]

DO UNTIL means that you want it to do something until something else happens i.e.

Do
Progressbar1.value = Progressbar1.value + 1
Loop Until ProgressBar1.value = 100

that code will keep adding a 1 to the progress bar wuntil it reaches 100

DO WHILE means that you want it to do someting while something else is happening i.e.

Do
Progressbar1.value = Progressbar1.value + 1
Loop While ProgressBar1.value = 100

that will add a 1 to the progress bar only if the value of the progress bar is 100


I hope that you understand this

[Edited by dimava on 09-19-2000 at 06:55 AM]

I usually use Do Until.

Do Until Progressbar1.Value = 100
Progressbar1.Value = Progressbar1.Value + 1
DoEvents
Loop

You could also use the For..Next statement as well.

For i = 0 to 100
Progressbar1.Value = i
DoEvents
Next i

[André]

Thanks, I know all of these constructions, the thing is that Bruce is close to what I read. It's an old construct to be fased out.

Thanks guys, have a great day!

André

When dealing with larger loops, using a For...Next loop is much faster than a Do...While loop.