How to detect whether a file has been modified

cunny

Hey guys,

just came up with a question, how to detect whether file has been modified after I open it and close it. I tried to use GETSTAMP but did not get it through.

Regards,

garak

when you open the file you can check the property DateLastModified, if this property is changed (OldDateLastModified <> ActualDateLastModified) before you close it, an other programm has modified it.

To check DateLastModified u can use WSH -> File.

Regards

cunny

Hi garak,

Thanks very much. But I could not find such a function you mentioned, could you tell me a little more about it? By the way, what is WSH :-k

Regards,

garak

An example:

Name	DataType	Subtype	Length
WSHFSO	Automation	'Windows Script Host Object Model'.FileSystemObject	
WSHFile	Automation	'Windows Script Host Object Model'.File	
OldDate	Date		
NewDate	Date	
OldFileSize	Integer		
NewFileSize	Integer		


....
//here you open the file
....

if isclear(WSHFSO) then
  create(WSHFSO);

if WSHFSO.FileExists(ThePathAndTheFile) then begin
  WSHFile := WSHFSO.GetFile(ThePathAndTheFile);
  OldDate := WSHFile.DateLastModified();
  OldSize := WSHFile.Size;
end;

.....
//here you read the file or what else in you C/AL is
.....

//now you will check if the file is changed during your reading

if WSHFSO.FileExists(ThePathAndTheFile) then begin
  WSHFile := WSHFSO.GetFile(ThePathAndTheFile);
  NewDate := WSHFile.DateLastModified();
  NewSize := WSHFile.Size;
end;

clear(WSHFSO);

if (OldDate <> NewDate) or (OldSize <> NewSize) then
  message('Somebody has change the file');

On the other hand, if you read the file with a File variable, and set before the property Writemode before you open it, no other program can change the file.

Regards

kriki

[Topic moved from Navision forum to Navision Tips & Tricks forum]

cunny

Hi garak,

Perfect! Thank you very much =D> !

Regards,

garak

You're welcome,
so could you set the Attribute in your first post to Attribute: [Solved] (go to first post -> Button Edit -> Drop down Field in the header)

Regards

cunny

Hi garak,

One more thing, the code works great but does not suit my requirement very well. What I want to do is when I open a file let's say a text and give some change, then I close it, at this moment, I need to check whether the text file has been modified or not. If yes I will have to tell the user about it and provide a function to replace the old one with the newest file. I have checked WSH to find some similar function but failed. Any idea?

Best Regards,