public bool ChangeSelectedCourse(Course course)
{
List <Course> courses = null;
Student s = null;
foreach (KeyValuePair <Student, List <Course> > item in dic)
{
if (item.Key.Equals(stu))
{
courses = item.Value;
courses.Remove(course);
s = item.Key;
}
}
if (!courses.Contains(course))
{
dic[s] = courses;
InputAndOutput.OutPutSelectedCourse(dic);
return(true);
}
else
{
return(false);
}
}
public bool DeleteStudent(Student student)
{
studentList.Remove(student);
if (studentList.Contains(student))
{
InputAndOutput.OutPutStudent(studentList);
return(false);
}
else
{
return(true);
}
}
public bool DeleteCourse(Course course)
{
courseList.Remove(course);
if (courseList.Contains(course))
{
return(false);
}
else
{
InputAndOutput.OutPutCourse(courseList);
return(true);
}
}
public bool AddStudent(Student student)
{
studentList.Add(student);
if (studentList.Contains(student))
{
InputAndOutput.OutPutStudent(studentList);
return(true);
}
else
{
return(false);
}
}
public bool AddCourse(Course course)
{
courseList.Add(course);
if (courseList.Contains(course))
{
InputAndOutput.OutPutCourse(courseList);
return(true);
}
else
{
return(false);
}
}
public bool ChangeCourseInfo(Course course)
{
Course c = courseList.Find(x => x.Coursenum == course.Coursenum);
courseList.Remove(c);
courseList.Add(course);
if (courseList.Contains(course))
{
InputAndOutput.OutPutCourse(courseList);
return(true);
}
else
{
return(false);
}
}
public bool ChangeStuentInfo(Student student)
{
Student c = studentList.Find(x => x.Stunum == student.Stunum);
studentList.Remove(c);
studentList.Add(student);
if (studentList.Contains(student))
{
InputAndOutput.OutPutStudent(studentList);
return(true);
}
else
{
return(false);
}
}
public bool ChangePassWord(string userpwd)
{
Student s1 = stu;
s1.Userpwd = userpwd;
studentList.Remove(stu);
studentList.Add(s1);
if (studentList.Contains(s1))
{
stu = s1;
InputAndOutput.OutPutStudent(studentList);
return(true);
}
else
{
return(false);
}
}
public bool SelectCourse(Course course)
{
Student s = null;
List <Course> courses = new List <Course>();
foreach (KeyValuePair <Student, List <Course> > item in dic)
{
if (item.Key.Equals(stu))
{
courses = item.Value;
courses.Add(course);
s = item.Key;
}
}
if (courses.Count <= 0)
{
courses.Add(course);
dic.Add(stu, courses);
if (courses.Contains(course))
{
InputAndOutput.OutPutSelectedCourse(dic);
return(true);
}
else
{
return(false);
}
}
else
{
if (courses.Contains(course))
{
dic[s] = courses;
InputAndOutput.OutPutSelectedCourse(dic);
return(true);
}
else
{
return(false);
}
}
}
private void PrintStudentMenu()
{
Console.WriteLine("-----------------------------------------------------------------------------");
Console.WriteLine("请选择：1.选择课程 2.查询可选 3.查看已选 4.修改选课 5.修改密码 ");
Console.WriteLine("输入exit退出");
Console.WriteLine("-----------------------------------------------------------------------------");
string menuNum = Console.ReadLine();
switch (menuNum)
{
case "1":
Console.WriteLine("-----------------------------------------------------------------------------");
Console.WriteLine("请输入要选择的课程名称：");
Console.WriteLine("-----------------------------------------------------------------------------");
string name = Console.ReadLine().Trim();
Course course = null;
List <Course> courseList = InputAndOutput.InputCourse();
foreach (var item in courseList)
{
if (item.Coursename == name)
{
course = item;
}
}
bool status = _studentService.SelectCourse(course);
if (status == true)
{
Console.WriteLine("-----------------------------------------------------------------------------");
Console.WriteLine("选课成功！");
Console.WriteLine("-----------------------------------------------------------------------------");
}
else
{
Console.WriteLine("-----------------------------------------------------------------------------");
Console.WriteLine("选课失败！");
Console.WriteLine("-----------------------------------------------------------------------------");
}
PrintStudentMenu();
break;
case "2":
List <Course> optionalCourseList = _studentService.OptionalCourse();
if (optionalCourseList.Count > 0)
{
Console.WriteLine("-----------------------------------------------------------------------------");
Console.WriteLine("课程序号 课程名称 最大人数 课程编号");
Console.WriteLine("-----------------------------------------------------------------------------");
foreach (var item in optionalCourseList)
{
Console.WriteLine(" {0} {1} {2} {3}", item.Id, item.Coursename, item.Maxnum, item.Coursenum);
}
Console.WriteLine("-----------------------------------------------------------------------------");
}
else
{
Console.WriteLine("-----------------------------------------------------------------------------");
Console.WriteLine("没有可选的课程！");
Console.WriteLine("-----------------------------------------------------------------------------");
}
PrintStudentMenu();
break;
case "3":
List <Course> selectedCourse = _studentService.SearchSelectedCourse();
if (selectedCourse == null)
{
Console.WriteLine("-----------------------------------------------------------------------------");
Console.WriteLine("没有已选课程！快去选课学习！");
Console.WriteLine("-----------------------------------------------------------------------------");
}
else
{
Console.WriteLine("-----------------------------------------------------------------------------");
Console.WriteLine("课程序号 课程名称 最大人数 课程编号");
Console.WriteLine("-----------------------------------------------------------------------------");
foreach (var item in selectedCourse)
{
if (item == null)
{
continue;
}
Console.WriteLine(" {0} {1} {2} {3}", item.Id, item.Coursename, item.Maxnum, item.Coursenum);
}
Console.WriteLine("-----------------------------------------------------------------------------");
}
PrintStudentMenu();
break;
case "4":
Console.WriteLine("-----------------------------------------------------------------------------");
Console.WriteLine("请输入要取消的课程编号：");
Console.WriteLine("-----------------------------------------------------------------------------");
string courNum = Console.ReadLine().Trim();
Course c = null;
List <Course> courses = _studentService.SearchSelectedCourse();
if (courses == null)
{
Console.WriteLine("-----------------------------------------------------------------------------");
Console.WriteLine("没有选课，请先去选课！");
Console.WriteLine("-----------------------------------------------------------------------------");
}
else
{
foreach (var item in courses)
{
if (item.Coursenum == courNum)
{
c = item;
}
}
bool f = _studentService.ChangeSelectedCourse(c);
if (f == true)
{
Console.WriteLine("-----------------------------------------------------------------------------");
Console.WriteLine("修改成功！");
Console.WriteLine("-----------------------------------------------------------------------------");
}
else
{
Console.WriteLine("-----------------------------------------------------------------------------");
Console.WriteLine("修改失败");
Console.WriteLine("-----------------------------------------------------------------------------");
}
}
PrintStudentMenu();
break;
case "5":
Console.WriteLine("-----------------------------------------------------------------------------");
Console.WriteLine("请输入新的密码：");
Console.WriteLine("-----------------------------------------------------------------------------");
string userPass = Console.ReadLine().Trim();
bool flag = _studentService.ChangePassWord(userPass);
if (flag == true)
{
Console.WriteLine("-----------------------------------------------------------------------------");
Console.WriteLine("修改成功！");
Console.WriteLine("-----------------------------------------------------------------------------");
}
else
{
Console.WriteLine("-----------------------------------------------------------------------------");
Console.WriteLine("修改失败");
Console.WriteLine("-----------------------------------------------------------------------------");
}
PrintStudentMenu();
break;
case "exit": Environment.Exit(0);
break;
default:
Console.WriteLine("-----------------------------------------------------------------------------");
Console.WriteLine("输入错误！");
Console.WriteLine("-----------------------------------------------------------------------------");
break;
}
}
