//检查该课程是否导入了学生名单
public bool checkImportStuInfos(string t_id, string cou_id, string cou_num)
{
DataTable dt = teacherBll.checkImportStuInfos(t_id, cou_id, cou_num);
if (dt.Rows.Count > 0)
{
return(true);
}
else
{
return(false);
}
}