/// <summary>
/// 先删除学生表中的毕业学生，再删除Ftp用户中的记录，再删除Signin表中的记录， 最后删除Web用户
/// 学年升级（只是年级改变）不影响Ftp账号使用（因为Ftp账号是根据Syear,Sclass,Snum入学年份、班级、学号创建
/// Ftp目录也是根据Syear,Sclass,Snum入学年份、班级、学号创建）
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void Btnupgrade_Click(object sender, EventArgs e)
{
LearnSite.BLL.Room rm = new LearnSite.BLL.Room();
if (rm.GradeCount() > 0)
{
DateTime nowtime1 = DateTime.Now;
LearnSite.BLL.Students st = new LearnSite.BLL.Students();
if (st.GetCounts() > 0)
{
st.Upgrade(); //所有年级升一级，并删除班级表中不存在班级的学生
System.Threading.Thread.Sleep(1000);
LearnSite.BLL.Signin sg = new LearnSite.BLL.Signin();
sg.Upgrade(); // 在签到表中删除学生表中不存在班级的学生
DateTime nowtime2 = DateTime.Now;
Labelmsg.Text = "学年升级成功！ 用时" + LearnSite.Common.Computer.Datagone(nowtime1, nowtime2) + "秒";
Btnupgrade.Enabled = false;
LearnSite.BLL.Room rbll = new LearnSite.BLL.Room();
rbll.UpdateRhidNone(); //清除班级选择
LearnSite.BLL.Courses bll = new LearnSite.BLL.Courses();
bll.HideCourse(); //将所有发布的学案收回，处于未发布状态
LearnSite.Common.WordProcess.Alert("请给任课老师重新选择新学期任教班级!", this.Page);
Session["Upgraded"] = "Done";
}
else
{
Labelmsg.Text = "没有学生";
}
}
else
{
Labelmsg.Text = "班级未设置！";
}
}
protected void Btnpublish_Click(object sender, EventArgs e)
{
LearnSite.BLL.Courses bll = new LearnSite.BLL.Courses();
bll.HideCourse();
Labelmsg.Text = "全部学案收回隐藏成功！";
}
