Getting out of a running loop[Resolved]

Well here is my current loop:

VB Code:

Dim Check As Boolean
For X = 0 To List1.ListCount - 1
For i = 0 To List2.ListCount - 1
user.Caption = List2.List(i)
pass.Caption = List1.List(X)
Check = LoginCheck(List2.List(i), List1.List(X))
If Check = False Then
Status.Caption = "Getting next user"
End If
Next i
Next X

It's length in time can be anywhere from 5 seconds to an hour, so it's neccesary to have one. Anyways, how would I exit this loop via a command button while it's running? I can't really think of a way to notify it to exit the loop. Any suggestions/ideas?

Why don't you use a Do... Loop instead? You could set a condition in a Do... Loop.

I tried a quick test and this seems to work...

VB Code:

Option Explicit
Dim NoMore As Boolean
 
Private Sub Command1_Click()
    NoMore = True
End Sub
 
Private Sub Command2_Click()
    Test
End Sub
 
Private Sub Test()
    Dim a As Double
    For a = 0 To 100000000
        DoEvents
        If NoMore = True Then
            MsgBox "Stop"
            Exit For
        End If
    Next
    MsgBox "Finish"
End Sub

Might it be sensible, rather than simply a command button, to have a progress bar with a command button (labelled Cancel) next to it, so the user can see whether it is worth interrupting or not. You'd then use dee-u's approach.
Another thing you could do is to have x and i as globals and the loop as for x = x to List1.ListCount - 1 etc, and the Cancel button's caption could change to Resume on clicking and launch the sub again to complete filling the listboxes.

Use timers with do events. :)

together with the flag like dee u said of course to really make sure that the process is stopped WHILE the loop is still running.. 'cause if not.. I doubt other events like the click will get processesed..

ehehehe.. sorry didn't read and check dee-u's posted code. :wave:

Im confused, how/where would I implement that into my code?

yup.. dee-u did not initialize his global variable NoMore...

VB Code:

Option Explicit
Dim DoTask As Boolean
 
Private sub Form_Load()
    DoTask = true
end sub
 
'First Button button click event
Private Sub Command1_Click()
    'set the flag to do the task to false to stop doing the flag
    DoTask = false
End Sub
 
'Second Button click event
Private Sub Command2_Click()
    'call loop here
    call subDoLoop()
End Sub
 
Private Sub subDoLoop()
    Dim a As Double
    For a = 0 To 100000000
        If Not DoTask Then
            MsgBox "Process Cancelled"
            Exit For
        End If
 
        'Do your processing here... :)
 
        ' Do events returns control to windows to allow processing of other windows commands one of which is possible the click button to pause... :)
        DoEvents
    Next
    MsgBox "Finish"
End Sub

changed code to make it clearer. :)
and added some comments.

Quote:

---

Originally Posted by oceanebelle

yup.. dee-u did not initialize his global variable NoMore...

VB Code:

Option Explicit
Dim DoTask As Boolean
 
Private sub Form_Load()
    DoTask = true
end sub
 
'First Button button click event
Private Sub Command1_Click()
    'set the flag to do the task to false to stop doing the flag
    DoTask = false
End Sub
 
'Second Button click event
Private Sub Command2_Click()
    'call loop here
    call subDoLoop()
End Sub
 
Private Sub subDoLoop()
    Dim a As Double
    For a = 0 To 100000000
        If Not DoTask Then
            MsgBox "Process Cancelled"
            Exit For
        End If
 
        'Do your processing here... :)
 
        ' Do events returns control to windows to allow processing of other windows commands one of which is possible the click button to pause... :)
        DoEvents
    Next
    MsgBox "Finish"
End Sub

changed code to make it clearer. :)
and added some comments.

---

I did not mind initializing the variable anymore since boolean's default is false. :)

so you have 2 buttons... one for cancelling and one for executing your code...


btw.. where is your code located?

Quote:

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Originally Posted by dee-u

I did not mind initializing the variable anymore since boolean's default is false. :)

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It would help to make the code more readable :)... it is good practise to initialize naman eh. bad ang hindi. :)

Have you declared GLOBAL variablies?

Quote:

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Originally Posted by dglienna

Have you declared GLOBAL variablies?

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sorry wrong term..


global variable for the module... module variables??? isn't it the same?

There have been a few things that have been left out in the past. I wanted to clarify things before I started trying to help him again.

Quote:

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Originally Posted by dglienna

There have been a few things that have been left out in the past. I wanted to clarify things before I started trying to help him again.

---

I'm intrigued... May I know that? :confused:

I still don't get it >_< I don't get how I would add that into my code without killing my other loop's. Like im not sure how to exactly add it without all my other loops stopping for that loop to go. It's kind of hard to explain, just try it and you'll see.

Quote:

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Originally Posted by dee-u

I'm intrigued... May I know that? :confused:

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me too

Quote:

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Originally Posted by Inuyasha1782

I still don't get it >_< I don't get how I would add that into my code without killing my other loop's. Like im not sure how to exactly add it without all my other loops stopping for that loop to go. It's kind of hard to explain, just try it and you'll see.

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I dunno where you place the code really... so cannot imagine nor try it...

I've had programmed a program that will have two more than too loops supposedly may work at any given time.... and well it worked fine... will your loops may execute at the same time... at any given time????

Well, you know how the flow of your program works so it's up to you where or how to do it, we gave guidance on how to do it so base it from there...

What? o_0 Like I said it's hard to explain. What my loop does:
The first for will take an item from one listbox, and run a check with every item in the second listbox. Once the second listbox is empty, the second loop kicks in and moves to the next item in the first lisbox, and repeats the whole process.

Also it's not a matter of my decision, as the places I have attempted to place it does not cooperate with any of my previous loops.

Quote:

---

Originally Posted by Inuyasha1782

What? o_0 Like I said it's hard to explain. What my loop does:
The first for will take an item from one listbox, and run a check with every item in the second listbox. Once the second listbox is empty, the second loop kicks in and moves to the next item in the first lisbox, and repeats the whole process.

Also it's not a matter of my decision, as the places I have attempted to place it does not cooperate with any of my previous loops.

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You can't just randomly place codes in your codes (and see if it works from there)... YOU'VE got to know what you are doing... in that, you would know where to place the new code. :(

If you yourself, don't know about it that how can we even help? :(

Which is why I said I am still confused..

I know what my code does, I just explained it to you above, and I know how it works too. Personally I don't think I can use that to stop it, since all my previous loops will be stopped no matter which way I attempt to put it. Since basicly the only logical place to put it is before all my loops, because placing it anywhere after them will cause it to be neglected until the other loop's needs are met. If I place it infront, that loop will just keep going until it's met and everything else will be neglected. If I call it from a sub, same effect.

So I do know my code, I was only asking if anyone knew a way as I personally don't think this will work.

dee-u's solution will work.. even used it in mine. :(...*sigh*

oh well.. good luck :D

Heh thanks, I guess. Well im not trying to sound by what you may call a "leecher", truly I have attempted to implement it in many ways, and I just used the last one right now and it didn't work. I just think it's the way my loop's run, if it worked for your project, that's nice, but I am using a completely different function behind all of this as well. I'll keep trying, although that was my last idea, I just think there is another, not neccisarily better, way of doing this.

This might work...

VB Code:

Option Explicit
Dim NoMore As Boolean
 
Private Sub Command1_Click()
    NoMore = True
End Sub
 
Private Sub Command2_Click()
    Test
End Sub
 
Private Sub Test()
    Dim Check As Boolean
    For x = 0 To List1.ListCount - 1
        For i = 0 To List2.ListCount - 1
            DoEvents
            If NoMore = True Then
                MsgBox "Stop"
                Exit Sub
            End If
            User.Caption = List2.List(i)
            pass.Caption = List1.List(x)
            Check = LoginCheck(List2.List(i), List1.List(x))
            If Check = False Then
                Status.Caption = "Getting next user"
            End If
        Next i
    Next x
End Sub

Hmm, not at first since my function messes some of that up, but I fixed it up a little differently, thanks :)

Glad to help. :)

Quote:

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Originally Posted by Inuyasha1782

Hmm, not at first since my function messes some of that up, but I fixed it up a little differently, thanks :)

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good for you :D