private void diskSpaceCheckTimer_Tick(object sender, EventArgs e)
{
string drive = System.IO.Path.GetPathRoot(Properties.Settings.Default.OutputPath);
int space = FileSystemStorage.GetFreeDiskSpaceMB(drive);
int diskQuota = int.Parse(Properties.Settings.Default.DiskQuota);
if (space <= diskQuota)
{
string msg = string.Format("\"{0}\" 盘空间仅剩余 {1} MB, 请尽快转存！", drive, space);
alertControl1.Show(this, "警告", msg);
}
}