Visual Basic

Re: Inheritance Advice Needed

21-Jan-09 2:37

Yes it is. Often enough in these cases, there is no free lunch.

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"dad" Ishmail-Samuel Mustafa

Unix is a Four Letter Word, and Vi is a Two Letter Abbreviation

Ray Cassick21-Jan-09 4:28

Ray Cassick

21-Jan-09 4:28

One thing you could do it create the base class and build the interface as protected.

While doing it this way does force you to fully inherit from the base class even to get its full implementation public, it allows inheritors to decide what inherited attributes are publicly exposed, giving you a bit of control with regards to what attributes are propagated outwards to the public interface of the inherited classes.

It is a bit of a hack but one I have used successfully before.

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simple pedigree, no interfaces

Luc Pattyn21-Jan-09 3:02

Luc Pattyn

21-Jan-09 3:02

Hi,

inheritance is not limited to two levels. You could do (pseudo-code):

class A
class B inherits from A
class C inherits from B
class C1 inherits from C
class C2 inherits from C

so B, C1, and C2 share everything in A
C1 and C2 share everything in C, but B does not.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

Good riddance W

Re: simple pedigree, no interfaces

Jay Royall21-Jan-09 3:22

Jay Royall

21-Jan-09 3:22

Thanks. I had considered this but thought it to be a little over elaborate for the sake of about 3 attributes/properties. So was wondering if there were any other ways around it. I think this is the way I'm going to go though.

Thanks for the advice all Big Grin | :-D

Re: simple pedigree, no interfaces

Luc Pattyn21-Jan-09 3:33

Luc Pattyn

21-Jan-09 3:33

you're welcome.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

Good riddance W

permission denied while deleting folder

jishbalan20-Jan-09 23:04

jishbalan

20-Jan-09 23:04

I cant able to delete a subfolder inside a folder.

What i going is, opening a file from subfolder, reading it and closing the file and copying it to other folder and then deleting that file. Same i doing for all files in that subfolder. then checking that subfolder size if its size is zero, deleting it.. this is the code i used to delete the folder

path = "c:\newfolder"
For Each fld In path.SubFolders
If fld.Size = 0 Then
fld.Delete : here i am getting permission denied, error 70
End If
Next fld
I am closing all the FileSystemObjects.

jishith

EliottA21-Jan-09 2:43

EliottA

21-Jan-09 2:43

Is this in Vista? Run the file as an administrator?

Luc Pattyn21-Jan-09 3:10

Luc Pattyn

21-Jan-09 3:10

Hi,

there could be several reasons why a folder cannot be deleted:
- it contains some files; checking its size against zero is not correct, what if there is an empty file?
- the file you tried to delete in an attempt to empty the folder did not get deleted for one of many reasons
- the folder is in use, e.g. there is a Windows Explorer window open showing it.
- the folder was created by some one else, you don't have delete rights for it.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

Good riddance W

jishbalan21-Jan-09 17:25

jishbalan

21-Jan-09 17:25

Hi,

Thanks for replying. but..

1) Checking the file folder size with 0 is not correct, here the folder is empty
2) I manually creating the folder, so no right issues
3) I can delete that folder, whn i am running my application for the next time. Only the first instance its showing permission denied. First i thought some oject is not releasing. But i making all the object i used in the function to nothing. Still it showing permission denied.
If there are four folders, its deleting three folders and when its come to the last one, the permission is denied.

How i make sure the folder is not in use? Or how to release the in use folder?

Jishith

Eddy Vluggen22-Jan-09 1:22

Eddy Vluggen

22-Jan-09 1:22

Perhaps you are the one who has the folder in use? Can a reference to fld keep the folder "locked for editing"?

Second question;

For Each fld In path.SubFolders
    If fld.Size = 0 Then
        fld.Delete <code>- Is this allowed in a foreach?</code>
    End If
Next fld

I are troll Smile | :)

jishbalan22-Jan-09 18:17

jishbalan

22-Jan-09 18:17

Thanks eddy,
i resolved the error...

automation error

subramanyeswari20-Jan-09 22:42

subramanyeswari

20-Jan-09 22:42

when i am compiling my vb6 project i am getting automation error. I looked it up in the google but did not find much help.

What is the reason for getting this error?

Please help me

Regards

Mustafa Ismail Mustafa20-Jan-09 22:56

20-Jan-09 22:56

You could provide a little bit more in the way of information.

What version of the .NET framework are you using?

This might also offer some help: http://social.msdn.microsoft.com/Forums/en-US/clr/thread/4b0251ad-aa48-4b16-a5aa-354bcb9cc56d/[^]

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"dad" Ishmail-Samuel Mustafa

Unix is a Four Letter Word, and Vi is a Two Letter Abbreviation

Tom Deketelaere21-Jan-09 0:01

21-Jan-09 0:01

Mustafa Ismail Mustafa wrote:
What version of the .NET framework are you using?

he is using vb6 so no .NET framework at all

Mustafa Ismail Mustafa21-Jan-09 1:38

21-Jan-09 1:38

If its calling managed code, and its faulting, it'll raise that error.

Tom Deketelaere21-Jan-09 1:48

21-Jan-09 1:48

Point taken, I shall be more careful next time Smile | :)

Mustafa Ismail Mustafa21-Jan-09 1:51

21-Jan-09 1:51

No worries, I'm just glad you didn't ask what I had to go through to find out.

The horrors.

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Sig history

"dad" Ishmail-Samuel Mustafa

Unix is a Four Letter Word, and Vi is a Two Letter Abbreviation

Jon_Boy21-Jan-09 2:15

Jon_Boy

21-Jan-09 2:15

lol.

Jon-boy writes note down for future reference...

Any suggestions, ideas, or 'constructive criticism' are always welcome.

"There's no such thing as a stupid question, only stupid people." - Mr. Garrison

Mustafa Ismail Mustafa21-Jan-09 2:35

21-Jan-09 2:35

Learn from others my friend. I got gray hairs working on that project. :shudder:

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Sig history

"dad" Ishmail-Samuel Mustafa

Unix is a Four Letter Word, and Vi is a Two Letter Abbreviation

Tom Deketelaere21-Jan-09 2:49

21-Jan-09 2:49

I know the feeling have one off those project's under my care as well. Written by a former employee, hasn't given me gray hairs (yet) but at my age it would have to be a very horrifying project to do that Smile | :)

Did learn a lot from it tho, mostly how not to do something but that's a start (I guess).

Mustafa Ismail Mustafa21-Jan-09 3:06

21-Jan-09 3:06

I turn 29 on the 12th of February, need I say more? Smile | :)

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Sig history

"dad" Ishmail-Samuel Mustafa

Unix is a Four Letter Word, and Vi is a Two Letter Abbreviation

Tom Deketelaere21-Jan-09 3:30

set theme for window form

21-Jan-09 3:30

Ok it has to be very very bad then Smile | :)

(I just turned 25 so...)

saturdayman20-Jan-09 21:41

saturdayman

20-Jan-09 21:41

how can i set a beautiful theme for my form
like this picture
http://onlaos.kilu.de/Imagez/SP1.JPG[^]

Re: set theme for window form

Tom Deketelaere21-Jan-09 0:01