private void ClientOnDownloadFileCompleted(object sender, AsyncCompletedEventArgs asyncCompletedEventArgs)
{
_client.Dispose();
App.AboutToExit();
Thread.Sleep(1000);
Process.Start("BMCL." + _build + ".exe", "-Update");
Logger.log(string.Format("BMCL V2 Ver.{0} 由于更新正在退出", BmclCore.BmclVersion));
this.Close();
Environment.Exit(0);
}