Student/BLL/Student_CourseOpen.cs

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using System;
using System.Text;
using System.Data;
using System.Data.SqlClient;
using System.Collections.Generic;

using Student.Model;
using Student.DAL;


namespace Student
{

    /// <summary>
    ///	开课信息表
    ///	BLL逻辑层 Student_CourseOpen
    /// 主要完成对DAL层的调用
    ///	2013-03-05 14:21:17
    /// </summary>
    public class CourseOpenBLL
    {
        /// <summary>
        /// 全局变量
        /// </summary>
        private static CourseOpenDAL DAL = CourseOpenDAL.GetInstance();
        /// <summary>
        /// 增加一条记录
        /// </summary>
        /// <param name="model">类实体</param>
        /// <returns></returns>
        public static int AddCourseOpen(Model.CourseOpen model)
        {
            return DAL.AddCourseOpen(model);
        }
        /// <summary>
        /// 判断对应班级是否已经开过对应的课程信息
        /// </summary>
        /// <param name="classID"></param>
        /// <param name="courseID"></param>
        /// <returns></returns>
        public static bool ExistCourseOpen(int classID, int courseID)
        {
            StringBuilder condition = new StringBuilder();
            condition.AppendFormat("ClassID={0} And CourseID={1}", classID, courseID);

            return GetCourseOpenInfoByCondition(condition.ToString()) != null ? true : false; 
        }

        /// <summary>
        /// 更新一条数据
        /// </summary>
        /// <param name="model">类实体</param>
        /// <returns></returns>
        public static bool UpdateCourseOpen(Model.CourseOpen model)
        {
            return DAL.UpdateCourseOpen(model);
        }

        /// <summary>