Accessing File system through Navision

Well this is an interesting case where we were required to import a text file into Navision and then take an action if it succeeded or failed. The requirement was such that there was a designated folder where files would be created on a scheduled basis with the timestamp being an part of the filename so that duplicates don't arise which means we could not hardcode a name for the text file in our code.

luckily for the File system table this was possible. The record has the following fields :
1. Path
2. Is a File
3. Name
4. Size
5. Date
6. Time
7. Data

As we knew the folder to search for this is what we had done

FileRec.RESET;
FileRec.SETRANGE(FileRec.Path,SalesSetup."Import Folder");
FileRec.SETRANGE(FileRec."Is a file",TRUE);
IF FileRec.FINDFIRST THEN REPEAT
Filename1 := FileRec.Path + '\' + FileRec.Name;
Filename2 := SalesSetup."Success Folder"+ '\' + FileRec.Name;
Filename3 := SalesSetup."Error Folder"+ '\' + FileRec.Name;
DataPortCodeunit.DefineFileName(Filename1);

IF DataPortCodeunit.RUN THEN BEGIN
IF FILE.COPY(Filename1,Filename2) THEN BEGIN
IF ERASE(Filename1) THEN;
END;
END
ELSE BEGIN
IF FILE.COPY(Filename1,Filename3) THEN BEGIN
IF ERASE(Filename1) THEN;
END;
IF GUIALLOWED THEN
MESSAGE('There was an error importing file: \\%1 \\%2',Filename1,GETLASTERRORTEXT);
END;
UNTIL FileRec.NEXT = 0;