FileStream.Unlo ck does not return signaled state

[Bohus]

I want that my thread sleeps until file is unlocked, but
if I wait for signaled state of FileStream handle, it does
not work and ARE.WaitOne() function returns immediately,
even if file is locked by another process.

I have following code :

....

FileStream FS = new FileStream
("\\Logs\\Criti calError.log",F ileMode.Append, FileAccess.Wri
te,FileShare.Re adWrite);
BinaryWriter BW = new BinaryWriter(FS );

try {FS.Lock(0,10); }
catch (IOException E) {
//WaitForSingleOb ject();
AutoResetEvent ARE = new AutoResetEvent( false);
ARE.Handle=FS.H andle;
ARE.WaitOne();
}

....

FS.Unlock(0,10) ;
FS.Close();

What sync function should I use that my thread wait until
file is unlocked ?

Thank you very much.