private void picOK_Click(object sender, EventArgs e)
        {
            string userName = this.tbUserName.Text.Trim();

            if (GlobalEnvironment.LocalUserInfo.USER_ACCOUNT.ToLower() == userName.ToLower())
            {
                if (CommHelper.Login(this.tbUserName.Text.Trim(), this.tbPwd.Text.Trim()))
                {
                    LockPanel.Close();
                    this.Close();    //关闭登录窗口
                }
                else
                {
                    new G5MessageBox("密码错误").ShowDialog();
                }
            }
            else
            {
                new G5MessageBox("用户名错误").ShowDialog();
            }
        }