stringsql=$@"SELECT ChapterNo FROM rb_scroll_appointment WHERE Group_Id ={groupId} and State <>5 and GuestId ={guestId} and CourseEndTime <= NOW() ORDER BY CourseEndTime DESC LIMIT 1";
stringsql=$@"SELECT CourseGradeNo FROM rb_scroll_appointment WHERE Group_Id ={groupId} and State <>5 and GuestId ={guestId} and CourseEndTime <= NOW() ORDER BY CourseEndTime DESC LIMIT 1";
varrobj=ExecuteScalar(sql);
returnrobj==null?0:Convert.ToInt32(robj);
}
else{
else
{
//下一次约课
stringsql=$@"SELECT ChapterNo FROM rb_scroll_appointment WHERE Group_Id ={groupId} and State <>5 and GuestId ={guestId} and CourseEndTime > NOW() ORDER BY CourseEndTime ASC LIMIT 1";
stringsql=$@"SELECT CourseGradeNo FROM rb_scroll_appointment WHERE Group_Id ={groupId} and State <>5 and GuestId ={guestId} and CourseEndTime > NOW() ORDER BY CourseEndTime ASC LIMIT 1";