Scenario
- Open file and read
- Move the file to another folder after reading is completed
Issue
While not running it in CIL, the code works, but once run it in CIL, it give the error "System.IO.IOException: The process cannot access the file because it is being used by another process".
Those who came from AX 2009 used to depends on AX to finalize an object by just leaving the scope. Ref: https://msdn.microsoft.com/en-us/library/io.finalize.aspx
But when running in CIL, the finalize needs to be called manually.
Below is a sample service class called by a controller, when running the code in CIL, if the 'finalize()' is called, no error occur. But if the 'finalize()' is not called, it give the error as shown above.
=================================================
class DemoService extends SysOperationServiceBase
{
}
=================================================
public void processDemo(DemoDataContract _contract)
{
;
this.processFile(_contract.parmFileNameFrom());
this.moveFile(_contract.parmFileNameFrom(), _contract.parmFileNameTo());
}
=================================================
void processFile(Filename _fileNameFrom)
{
#File
FileIoPermission perm;
TextIo importFile;
container record;
int totalRecords;
;
perm = new FileIoPermission(_fileNameFrom, #io_read);
perm.assert();
importFile = new TextIo(_fileNameFrom, #io_read);
while(importFile.status() == IO_Status::Ok)
{
record = importFile.read();
totalRecords++;
}
if(totalRecords)
info(strFmt("Row count: %1", totalRecords));
//importFile.finalize(); //Enable and disable this comment to test the effect
}
=================================================
void moveFile(Filename _sourceFile, Filename _destinationFile)
{
#File
FileIoPermission perm;
;
perm = new FileIoPermission(_destinationFile, #io_write);
perm.assert();
System.IO.File::Move(_sourceFile, _destinationFile);
}
