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10/28/2009 at 12:29PM PDT, ID: 24852382
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7.6

VB6 FTP

Asked by APD_Toronto in VB Controls, File Transfer Protocol (FTP), MS DOS

Tags: VB6 FTP

Hello Experts,

I have written a VB6 that downloads an Access db, synchronizes it with another local db, then uploads the online db back, all this is done w/o human interaction.  I cannot do this directly as my ISP blocks outside connections.

For the download/upload, Im writing a ftp script as a .txt file, then calling the ftp script from a .bat file.  As other VB code does not wait for my shell code to finish, after I run my batch file, I activate a VB Timer to wait 30seconds before executing the next VB command.  As the db grew, I increased the timer to 45s, and now its at its maximum of 65s.

I know I can use a secondary timer, and flip/flop between the two to increase minutes, or use a For loop, but I think a timer is not safe at all as the download/upload speed depends on external factors as well (network traffic, loose connection, etc.)

Another person advised using a file marker, wher a dummy file is created, then having the batch file delete the dummy file, while I have an empty Do While File exists Loop, but as the ftp takes minutes, VB6 suspects that this is an endless loop and crashes the system.

Any suggestions?
[+][-]10/28/09 12:46 PM, ID: 25687439

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[+][-]10/28/09 01:03 PM, ID: 25687623

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[+][-]10/28/09 01:14 PM, ID: 25687744

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About this solution

Zones: VB Controls, File Transfer Protocol (FTP), MS DOS
Tags: VB6 FTP
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Solution Provided By: Idle_Mind
Participating Experts: 3
Solution Grade: A
 
 
[+][-]10/28/09 06:22 PM, ID: 25689879

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[+][-]10/29/09 12:33 PM, ID: 25697372

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