/// <summary>
/// 根据班级Id和删除标识获得学生集合
/// </summary>
/// <param name="classInfo_id">班级Id</param>
/// <param name="delFlag">删除标识：0---未删除，1---已删除</param>
/// <returns></returns>
public List <Student> GetAllStudentByClassInfoId(int classInfo_id, int delFlag = 0)
{
return(idal_student.GetAllStudentByClassInfoId(classInfo_id, delFlag));
}