Test your File code (Open, Copy, Remove) handles errors correctly when a program has a file locked or opened in an Access or Share mode not compatible with the mode your code requests. You can also use this tool to test when your program has a file open what modes can be used to open and read the file.
FileLockCheck is intended for use in BAT files to check if a file is in use before doing a COPY or other operation that requires exclusive access. It displays the window below to inform the user of the problem so they can try to get the file closed or cancel. The lock is retried every 3 seconds. Once the lock succeeds the message turns green and closes in 3 seconds. The file is opened "Read Only + Deny All" so it is not touched.
Because it is intended for BAT file use. on exit it sets the ERRORLEVEL as follows:
| ErrorLevel | Reason |
|---|---|
| 0 | Lock Succeeded |
| 1 | Lock Failed |
| 2 | File does not exist |
Typical BAT code would be:
REM Check if file can be locked then copy
FileLockCheck FileNameXYZ.TPS
IF NOT ERRORLEVEL 1 GOTO :CanCopy
ECHO Unable to Copy FileNameXYZ.TPS
IF ERRORLEVEL 2 ECHO File does not exist
PAUSE
GOTO :EOF
:CanCopy
COPY FileNameXYZ.TPS X:\Target
The easy way to test FileLockCheck is to use OpenFileForTest to "Open File" as Deny All then run FileLockCheck. Click "Close File" to see FileLockCheck turn green then close.