protected void Ckreg_CheckedChanged(object sender, EventArgs e) { int Sgrade = Int32.Parse(DDLgrade.SelectedValue.ToString()); int Sclass = Int32.Parse(DDLclass.SelectedValue.ToString()); LearnSite.BLL.Room rbll = new LearnSite.BLL.Room(); rbll.SetRreg(Sgrade, Sclass, Ckreg.Checked); if (Ckreg.Checked) { Ckreg.ToolTip = "允许在线注册为本班学员!"; } else { Ckreg.ToolTip = "禁止在线注册为本班学员!"; } }