Visual BASIC Questions

LennonCook · 10-14-2003, 02:57 AM

All to do with external files -

1) Is there a way to Open a file so that it can be both read from and written to?

2) Is there any way to Open and perform processes to multiple files at once?

3) Is there a way to open a file without the user having to point directly to it, if you know the path but not the filename? (For example, to open and process every file at a certain place, with a .EG extention)

EDIT:
4) Is it possible to make a new directory or check if a directory exists?

[ 10-14-2003, 03:17 AM: Message edited by: LennonCook ]

Jorath Calar · 10-14-2003, 04:19 AM

I used to know how to do both 1 and 3... in VB 5... but not anymore sorry.

but here are some sites that might help...

http://www.vb-helper.com/index_files...rectories.html
http://www.vbcode.com/

Good luck! [img]smile.gif[/img]

pritchke · 10-14-2003, 10:56 AM

1. Yes

2. I don't think threads are possible in VB. You can modify both files but process wise I think you have no choice but to modify one file, then the other. from a user prespective it would still appear to be modified at almost the same same time. You can have more than one file open at a time and do things to them.

3. This is possible

4. This is possible

I don't have time to provide examples but I may come back later to fill in some blamks if I have time.

[ 10-14-2003, 11:04 AM: Message edited by: pritchke ]

LennonCook · 10-20-2003, 07:05 AM

OK, I think I've figured out some of this myself, but I need one small bit of code for it to work properly:
How would I delete a file - as in, remove it from the allocation tables not just override it with 0 data?

Melusine · 10-20-2003, 07:35 AM

Wasn't yesterday your birthday Lennon?

(said so on Pandemonium). If so, hope you had a good one!! [img]smile.gif[/img]

Night Stalker · 10-20-2003, 11:14 AM

Quote:

Originally posted by LennonCook:
OK, I think I've figured out some of this myself, but I need one small bit of code for it to work properly:
How would I delete a file - as in, remove it from the allocation tables not just override it with 0 data?

Depends on whether you are using a file object or not. If using an object the .delete method is available.

Otherwise del filename should work.

LennonCook · 10-21-2003, 02:19 AM

Quote:

Originally posted by Melusine:
Wasn't yesterday your birthday Lennon?
(said so on Pandemonium). If so, hope you had a good one!! [img]smile.gif[/img]

Indeed it was. [img]smile.gif[/img]

Nightstalker, how would I use a file object? The only coding I've been able to find online says it's for VB6, but seems to not work (possibly it's for VB.Net?) - that is, Dim FP As New Scripting.FileSystemObject , but my version of VB doesn't seem to like that datatype somehow...

Night Stalker · 10-21-2003, 10:31 AM

You need to link the library for it into your project. I don't remember which library at the moment. You get there I think by right clicking on the controls tool bar, select components and then one of the tabs on that dialog box. It's been awhile and don't have a copy of VB in front of me.

ANyway, I think it's the scripting library. Sorry I can't be more specific.

10-20-2003, 07:35 AM	#5
Melusine Dracolisk Join Date: January 8, 2001 Location: Amsterdam, The Netherlands Age: 43 Posts: 6,541	Wasn't yesterday your birthday Lennon? (said so on Pandemonium). If so, hope you had a good one!! [img]smile.gif[/img] __________________ [img]\"hosted/melusine.jpg\" alt=\" - \" /><br />Your voice is ambrosia

10-21-2003, 10:31 AM	#8
Night Stalker Lord Ao Join Date: June 24, 2002 Location: Nevernever Land Age: 49 Posts: 2,002	You need to link the library for it into your project. I don't remember which library at the moment. You get there I think by right clicking on the controls tool bar, select components and then one of the tabs on that dialog box. It's been awhile and don't have a copy of VB in front of me. ANyway, I think it's the scripting library. Sorry I can't be more specific. __________________ [url]\"http://www.duryea.org/pinky/gurkin.wav\" target=\"_blank\">AYPWIP?</a> .... <img border=\"0\" alt=\"[1ponder]\" title=\"\" src=\"graemlins/1ponder.gif\" /> <br />\"I think so Brain, but isn\'t a cucumber that small called a gherkin?\"<br /><br />Shut UP! Pinky!

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10-14-2003, 02:57 AM	#1
LennonCook Jack Burton Join Date: November 10, 2001 Location: Bathurst & Orange, in constant flux Age: 37 Posts: 5,452	All to do with external files - 1) Is there a way to Open a file so that it can be both read from and written to? 2) Is there any way to Open and perform processes to multiple files at once? 3) Is there a way to open a file without the user having to point directly to it, if you know the path but not the filename? (For example, to open and process every file at a certain place, with a .EG extention) EDIT: 4) Is it possible to make a new directory or check if a directory exists? [ 10-14-2003, 03:17 AM: Message edited by: LennonCook ]

10-14-2003, 04:19 AM	#2
Jorath Calar Harper Join Date: October 6, 2001 Location: Iceland Posts: 4,706	I used to know how to do both 1 and 3... in VB 5... but not anymore sorry. but here are some sites that might help... http://www.vb-helper.com/index_files...rectories.html http://www.vbcode.com/ Good luck! [img]smile.gif[/img]

10-14-2003, 10:56 AM	#3
pritchke Bastet - Egyptian Cat Goddess Join Date: September 5, 2001 Location: Calgary, AB Age: 49 Posts: 3,491	1. Yes 2. I don't think threads are possible in VB. You can modify both files but process wise I think you have no choice but to modify one file, then the other. from a user prespective it would still appear to be modified at almost the same same time. You can have more than one file open at a time and do things to them. 3. This is possible 4. This is possible I don't have time to provide examples but I may come back later to fill in some blamks if I have time. [ 10-14-2003, 11:04 AM: Message edited by: pritchke ]

10-20-2003, 07:05 AM	#4
LennonCook Jack Burton Join Date: November 10, 2001 Location: Bathurst & Orange, in constant flux Age: 37 Posts: 5,452	OK, I think I've figured out some of this myself, but I need one small bit of code for it to work properly: How would I delete a file - as in, remove it from the allocation tables not just override it with 0 data?

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