public void TestCancel()
{
object handle;
FileStatus fileStatus;
m_fileStore.CreateFile(out handle, out fileStatus, TestDirName, AccessMask.GENERIC_ALL, FileAttributes.Directory, ShareAccess.Read, CreateDisposition.FILE_OPEN, CreateOptions.FILE_DIRECTORY_FILE, null);
object ioRequest = null;
NTStatus status = m_fileStore.NotifyChange(out ioRequest, handle, NotifyChangeFilter.FileName | NotifyChangeFilter.LastWrite | NotifyChangeFilter.DirName, false, 8192, OnNotifyChangeCompleted, null);
Assert.IsTrue(status == NTStatus.STATUS_PENDING);
m_fileStore.Cancel(ioRequest);
m_fileStore.CloseFile(handle);
while (m_notifyChangeStatus == null)
{
Thread.Sleep(1);
}
Assert.IsTrue(m_notifyChangeStatus.Value == NTStatus.STATUS_CANCELLED);
}