Delete a file from an Lazarus/FPC app
lazarus / 21-General

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1HuntnMan · 2023-11-18 15:24

Simple question but can't find in any of my docs on Lazarus on how to
delete a file.  I'm programming on a Windows computer and want to
export the data from a database (TDbf) table, delete the table and
it's index/memo files, then recreate the table and indexes then import
the CSV export data.
I know how to do all that except delete the files with pascal code.

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jamie · 2023-11-18 15:27

deleteFile ?

Just specify the full path to it and make sure the file isn't in use
at the time.

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cpicanco · 2023-11-18 15:39

Take a look at DeleteFile: https://www.freepascal.org/docs-
html/rtl/sysutils/deletefile.html

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1HuntnMan · 2023-11-18 19:55

Thanks, Delete a file from the file system.


function DeleteFile(const FileName: RawByteString):Boolean;

Description: DeleteFile deletes file FileName from disk. The function
returns True if the file was successfully removed, False otherwise. 
On error, False is returned.

So, to delete a Dbf file named Appointments.dbf from a file located on
'C:\Documents\Software Development\PMS Project\PMS Data\'

if DeleteFile(C:\Documents\Software Development\PMS
Data\Appointments.dbf) = True then
  CreateNewAppointments.dbf table code
else
  Error statement;

Correct?

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1HuntnMan · 2023-11-18 20:06

DeleteFile('C:\Documents\Software Development\PMS Project\PMS
Data\Appointments.dbf');

More correct ... Thanks