//添加课程的业务逻辑
public bool AddCourse(CourseModel objCourseModel)
{
CourseDAL objCourseDAL = new CourseDAL();
if (objCourseDAL.SearchCoursebool(objCourseModel)==true)
{
MessageBox.Show("课程已存在，不能添加");
return (false);
}
else
{
return (objCourseDAL.AddCourse(objCourseModel));
}
#region //
//public bool AddCourse(string CourseNum, string CourseName, string Credit, string ProOrPub, string NeedOrOpt)
//{
// CourseDALClass objCourseDAL = new CourseDALClass();
// if (objCourseDAL.SearchCourse(CourseNum) == true)
// {
// MessageBox.Show("课程已存在，不能添加");
// return(false);
// }
// else
// {
// return (objCourseDAL.AddCourse(CourseNum,CourseName,Credit,ProOrPub,NeedOrOpt));
// }
//}
#endregion
}
/// <summary>
/// 保存课程信息
/// </summary>
/// <param name="courses"></param>
public static void SaveCourses(CourseDAL courses)
{
using (FileStream fs = new FileStream(coursesDocPath, FileMode.Create, FileAccess.Write))
{
BinaryFormatter bf = new BinaryFormatter();
bf.Serialize(fs, courses);
}
}
/// <summary>
/// 读取课程信息
/// </summary>
/// <returns></returns>
public static CourseDAL GetCourses()
{
CourseDAL courses;
if (File.Exists(coursesDocPath))
{
using (FileStream fs = new FileStream(coursesDocPath, FileMode.Open, FileAccess.Read))
{
BinaryFormatter bf = new BinaryFormatter();
courses = (CourseDAL)bf.Deserialize(fs);
}
}
else
{
using (FileStream fs = new FileStream(coursesDocPath, FileMode.CreateNew, FileAccess.Write))
{
BinaryFormatter bf = new BinaryFormatter();
courses = new CourseDAL();
bf.Serialize(fs, courses);
}
}
return(courses);
}
//获取所有课程的业务逻辑
public DataTable ShowCourse()
{
CourseDAL objCourseDAL = new CourseDAL();
return (objCourseDAL.ShowCourse());
}
public bool DelCourse(CourseModel objCourseModel)
{
CourseDAL objCourseDAL = new CourseDAL();
return (objCourseDAL.DeletCourse(objCourseModel));
}
public bool ChangeCourse(CourseModel objCourseModel)
{
CourseDAL objCourseDAL = new CourseDAL();
return (objCourseDAL.ChangeCourse(objCourseModel));
}
