Yes I realize that, but I only want the file not writable by another PC while a record is being written. When I'm finished writing a record, which may take a few milliseconds, I want others to be able to write to the file immediately afterwards.
If an attempt to write to the file fails, it needs to wait in a loop until the file is writable again. So is opening and closing the file in different modes the only way to do this? I'm thinking back a few years to when I use to program in Dataflex for DOS. It was multi-user but not client/server. It had a Lock and Unlock command which you could set just before and after a SaveRecord operation to a file. I don't think it actually closed and opened the file everytime the Lock and Unlock was performed, but I may be wrong. It seemed a lot faster than that. There were updates of thousands of records with a Lock and Unlock used for each record and it was very quick. Any further ideas? Thanks, Ross. ----- Original Message ----- From: "Wilfried Mestdagh" <[EMAIL PROTECTED]> To: "Borland's Delphi Discussion List" <[email protected]> Sent: Monday, March 19, 2007 12:57 AM Subject: Re: File locking Hello Ross, You can open the file with fmOpenReadWrite or fmShareDenyWrite. then others cannot write to the file. --- Rgds, Wilfried http://www.mestdagh.biz _______________________________________________ Delphi mailing list -> [email protected] http://www.elists.org/mailman/listinfo/delphi _______________________________________________ Delphi mailing list -> [email protected] http://www.elists.org/mailman/listinfo/delphi
