//**********************************************
// event handling method for the "Add" Button
//
public void AddButtonClicked(object source, EventArgs e)
{
// Determine which section is selected (note that we must
// cast it, as it is returned as an Object reference).
Section selected = (Section)scheduleListBox.SelectedItem;
// Attempt to enroll the student in the section, noting
// the status code that is returned.
EnrollFlags status = selected.Enroll(currentUser);
// Report the status to the user.
if (status == EnrollFlags.SECTION_FULL)
{
MessageBox.Show("Sorry - that section is full.", "Request Denied",
MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else if (status == EnrollFlags.PREREQ_NOT_SATISFIED)
{
string message = "You haven't satisfied all " +
"of the prerequisites for this course.";
MessageBox.Show(message, "Request Denied",
MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else if (status == EnrollFlags.PREVIOUSLY_ENROLLED)
{
string message = "You are enrolled in or have successfully " +
"completed a section of this course.";
MessageBox.Show(message, "Request Denied",
MessageBoxButtons.OK, MessageBoxIcon.Warning);
}
else // success!
{
string message = "Seat confirmed in " +
selected.RepresentedCourse.CourseNumber + ".";
MessageBox.Show(message, "Request Successful",
MessageBoxButtons.OK, MessageBoxIcon.Information);
// Update the list of sections
// that this student is registered for.
registeredListBox.Items.Clear();
List <Section> enrolledSections = currentUser.Attends;
foreach (Section section in enrolledSections)
{
registeredListBox.Items.Add(section);
}
// Update the field representing student's course total.
totalTextBox.Text = "" + currentUser.GetCourseTotal();
// Clear the selection in the schedule of classes list.
scheduleListBox.SelectedItem = null;
}
// Check states of the various buttons.
ResetButtons();
}
public static void ReportStatus(EnrollFlags status)
{
if (status == EnrollFlags.SUCCESSFULLY_ENROLLED)
{
Console.WriteLine("outcome: SUCCESSFULLY_ENROLLED");
}
else if (status == EnrollFlags.PREREQ_NOT_SATISFIED)
{
Console.WriteLine("outcome: PREREQ_NOT_SATISFIED");
}
else if (status == EnrollFlags.PREVIOUSLY_ENROLLED)
{
Console.WriteLine("outcome: PREVIOUSLY_ENROLLED");
}
else if (status == EnrollFlags.SECTION_FULL)
{
Console.WriteLine("outcome: SECTION_FULL");
}
}
public static List<Student> studentBody; // Generic List of Students
#endregion Fields
#region Methods
public static void ReportStatus(EnrollFlags status)
{
if (status == EnrollFlags.SUCCESSFULLY_ENROLLED)
{
Console.WriteLine("outcome: SUCCESSFULLY_ENROLLED");
}
else if (status == EnrollFlags.PREREQ_NOT_SATISFIED)
{
Console.WriteLine("outcome: PREREQ_NOT_SATISFIED");
}
else if (status == EnrollFlags.PREVIOUSLY_ENROLLED)
{
Console.WriteLine("outcome: PREVIOUSLY_ENROLLED");
}
else if (status == EnrollFlags.SECTION_FULL)
{
Console.WriteLine("outcome: SECTION_FULL");
}
}
public static List <Course> courseCatalog; // Generic List of Courses
static void Main(string[] args)
{
Professor p1, p2, p3;
Student s1, s2, s3;
Course c1, c2, c3, c4, c5;
Section sec1, sec2, sec3, sec4, sec5, sec6, sec7;
// 创建多个对象（可能调用不同的构造函数）
// 通常从数据库或文件中读取数据加载对象到内存中
// -----------
// Professors.
// -----------
p1 = new Professor("Jacquie Barker", "123-45-6789",
"Adjunct Professor", "Information Technology");
p2 = new Professor("John Carson", "567-81-2345",
"Full Professor", "Chemistry");
p3 = new Professor("Jackie Chan", "987-65-4321",
"Full Professor", "Physical Education");
// Add these to the appropriate List.
faculty = new List <Professor>();//列表需要先实例化再使用
faculty.Add(p1);
faculty.Add(p2);
faculty.Add(p3);
// ---------
// Students.
// ---------
s1 = new Student("Zachary Palmer", "111-11-1111", "Math", "M.S.");
s2 = new Student("Gerson Lopez", "222-22-2222",
"Information Technology", "Ph. D.");
s3 = new Student("Mannat Durgapal", "333-33-3333", "Physics", "B.S.");
// Add these to the appropriate List.
studentBody = new List <Student>();
studentBody.Add(s1);
studentBody.Add(s2);
studentBody.Add(s3);
// --------
// Courses.
// --------
c1 = new Course("CMP101", "Beginning Computer Technology", 3.0);
c2 = new Course("OBJ101", "Object Methods for Software Development", 3.0);
c3 = new Course("CMP283", "Higher Level Languages (C#)", 3.0);
c4 = new Course("CMP999", "Living Brain Computers", 3.0);
c5 = new Course("ART101", "Beginning Basketweaving", 3.0);
// Add these to the appropriate List.
courseCatalog = new List <Course>();
courseCatalog.Add(c1);
courseCatalog.Add(c2);
courseCatalog.Add(c3);
courseCatalog.Add(c4);
courseCatalog.Add(c5);
// 建立课程间的先修关系 (c1 => c2 => c3 => c4).
c2.AddPrerequisite(c1);
c3.AddPrerequisite(c2);
c4.AddPrerequisite(c3);
// ---------
// Sections.
// ---------
// 通过调用Course对象的ScheduleSection方法生成一个Section对象，相当于给某门课建立一个排课
//Schedule sections of each Course by calling the
// scheduleSection method of Course (which internally
// invokes the Section constructor).
sec1 = c1.ScheduleSection("M", "8:10 - 10:00 PM", "GOVT101", 30);
sec2 = c1.ScheduleSection("W", "6:10 - 8:00 PM", "GOVT202", 30);
sec3 = c2.ScheduleSection("Th", "4:10 - 6:00 PM", "GOVT105", 25);
sec4 = c2.ScheduleSection("Tu", "6:10 - 8:00 PM", "SCI330", 25);
sec5 = c3.ScheduleSection("M", "6:10 - 8:00 PM", "GOVT101", 20);
sec6 = c4.ScheduleSection("Th", "4:10 - 6:00 PM", "SCI241", 15);
sec7 = c5.ScheduleSection("F", "4:10 - 6:00 PM", "ARTS25", 40);
//将Section加入到选课列表中
// Add these to the Schedule of Classes.
scheduleOfClasses.AddSection(sec1);
scheduleOfClasses.AddSection(sec2);
scheduleOfClasses.AddSection(sec3);
scheduleOfClasses.AddSection(sec4);
scheduleOfClasses.AddSection(sec5);
scheduleOfClasses.AddSection(sec6);
scheduleOfClasses.AddSection(sec7);
//设定每门课的教师
// Recruit a professor to teach each of the sections.
p3.AgreeToTeach(sec1);
p2.AgreeToTeach(sec2);
p1.AgreeToTeach(sec3);
p3.AgreeToTeach(sec4);
p1.AgreeToTeach(sec5);
p2.AgreeToTeach(sec6);
p3.AgreeToTeach(sec7);
Console.WriteLine("Student registration has begun!");
Console.WriteLine("");
//模拟学生选课
// Students drop/add courses.
Console.WriteLine("Student " + s1.Name +
" is attempting to enroll in " +
sec1.ToString());
EnrollFlags status = sec1.Enroll(s1);
// Note the use of a special method to interpret
// and display the outcome of this enrollment request.
// (We could have included the code in-line here, but
// since (a) it is rather complex and (b) it will need
// to be repeated for all subsequent enrollment requests
// below, it made sense to turn it into a reusable method
// instead.)
//这个方法显示这个学生本次选课是否成功
ReportStatus(status);
//让该学生（s1）再次选这门课程（已选过），观察选课结果（选课应该不能成功）
// Try enrolling the same Student in a different Section
// of the SAME Course!
Console.WriteLine("Student " + s1.Name +
" is attempting to enroll in " +
sec2.ToString()); //sec1和sec2是同一Course的两个Section
status = sec2.Enroll(s1);
ReportStatus(status);
Console.WriteLine("Student " + s2.Name +
" is attempting to enroll in " +
sec2.ToString());
status = sec2.Enroll(s2);
ReportStatus(status);
Console.WriteLine("Student " + s2.Name +
" is attempting to enroll in " +
sec3.ToString());
status = sec3.Enroll(s2);
ReportStatus(status);
Console.WriteLine("Student " + s2.Name +
" is attempting to enroll in " +
sec7.ToString());
status = sec7.Enroll(s2);
ReportStatus(status);
Console.WriteLine("Student " + s3.Name +
" is attempting to enroll in " +
sec1.ToString());
status = sec1.Enroll(s3);
ReportStatus(status);
Console.WriteLine("Student " + s3.Name +
" is attempting to enroll in " +
sec5.ToString());
status = sec5.Enroll(s3);
ReportStatus(status);
// Skip a line.
Console.WriteLine("");
// When the dust settles, here's what folks wound up
// being registered for:
//
// sec1: s1, s3
// sec2: s2
// sec7: s2
//此处模拟学期结束教授给学生打分
// Semester is finished (boy, that was quick!). Professors
// assign grades.
sec1.PostGrade(s1, "C+");
sec1.PostGrade(s3, "A");
sec2.PostGrade(s2, "B+");
sec7.PostGrade(s2, "A-");
//使用display方法显示各个对象最终状态
// Let's see if everything got set up properly
// by calling various display methods!
Console.WriteLine("====================");
Console.WriteLine("Schedule of Classes:");
Console.WriteLine("====================");
Console.WriteLine("");
scheduleOfClasses.Display();
Console.WriteLine("======================");
Console.WriteLine("Professor Information:");
Console.WriteLine("======================");
Console.WriteLine("");
p1.Display();
Console.WriteLine("");
p2.Display();
Console.WriteLine("");
p3.Display();
Console.WriteLine("");
Console.WriteLine("====================");
Console.WriteLine("Student Information:");
Console.WriteLine("====================");
Console.WriteLine("");
s1.Display();
Console.WriteLine("");
s2.Display();
Console.WriteLine("");
s3.Display();
//练习14.2
Section sec2_1, sec2_2, sec2_3, sec2_4, sec2_5, sec2_3, sec2_4, sec2_5;
Section sec2_1, sec2_2;
sec2_1 = c1.ScheduleSection("M", "8:10 - 10:00 PM", "GOVT101", 30);
sec2_1 = c1.ScheduleSection("W", "6:10 - 8:00 PM", "GOVT202", 30);
sec2_2 = c2.ScheduleSection("W", "6:10 - 8:00 PM", "GOVT202", 30);
scheduleOfClasses1.AddSection(sec1);
scheduleOfClasses1.AddSection(sec2);
//题2：让s1选sec2
EnrollFlags result = sec2_1.Enroll(s1);
//修改成绩
sec1.EraseGrade(s1, "D");
//选修有先修课程的学科
Console.WriteLine("Student " + s1.Name +
" is attempting to enroll in " +
sec2_2.ToString());
status = sec2_2.Enroll(s1);
ReportStatus(status);
Console.WriteLine("Student " + s2.Name +
" is attempting to enroll in " +
sec2_2.ToString());
status = sec2_2.Enroll(s2);
ReportStatus(status);
//题3：
//题4：
Console.ReadKey();
}
public static List <Course> courseCatalog; // Generic List of Courses
static void Main()
{
Professor p1, p2, p3;
Student s1, s2, s3;
Course c1, c2, c3, c4, c5;
Section sec1, sec2, sec3, sec4, sec5, sec6, sec7;
// Create various objects by calling the appropriate
// constructors. (We'd normally be reading in such data
// from a database or file ...)
// -----------
// Professors.
// -----------
p1 = new Professor("Jacquie Barker", "123-45-6789",
"Adjunct Professor", "Information Technology");
p2 = new Professor("John Carson", "567-81-2345",
"Full Professor", "Chemistry");
p3 = new Professor("Jackie Chan", "987-65-4321",
"Full Professor", "Physical Education");
// Add these to the appropriate List.
faculty = new List <Professor>();
faculty.Add(p1);
faculty.Add(p2);
faculty.Add(p3);
// ---------
// Students.
// ---------
s1 = new Student("Zachary Palmer", "111-11-1111", "Math", "M.S.");
s2 = new Student("Gerson Lopez", "222-22-2222",
"Information Technology", "Ph. D.");
s3 = new Student("Mannat Durgapal", "333-33-3333", "Physics", "B.S.");
// Add these to the appropriate List.
studentBody = new List <Student>();
studentBody.Add(s1);
studentBody.Add(s2);
studentBody.Add(s3);
// --------
// Courses.
// --------
c1 = new Course("CMP101", "Beginning Computer Technology", 3.0);
c2 = new Course("OBJ101", "Object Methods for Software Development", 3.0);
c3 = new Course("CMP283", "Higher Level Languages (C#)", 3.0);
c4 = new Course("CMP999", "Living Brain Computers", 3.0);
c5 = new Course("ART101", "Beginning Basketweaving", 3.0);
// Add these to the appropriate List.
courseCatalog = new List <Course>();
courseCatalog.Add(c1);
courseCatalog.Add(c2);
courseCatalog.Add(c3);
courseCatalog.Add(c4);
courseCatalog.Add(c5);
// Establish some prerequisites (c1 => c2 => c3 => c4).
c2.AddPrerequisite(c1);
c3.AddPrerequisite(c2);
c4.AddPrerequisite(c3);
// ---------
// Sections.
// ---------
// Schedule sections of each Course by calling the
// scheduleSection method of Course (which internally
// invokes the Section constructor).
sec1 = c1.ScheduleSection("M", "8:10 - 10:00 PM", "GOVT101", 30);
sec2 = c1.ScheduleSection("W", "6:10 - 8:00 PM", "GOVT202", 30);
sec3 = c2.ScheduleSection("Th", "4:10 - 6:00 PM", "GOVT105", 25);
sec4 = c2.ScheduleSection("Tu", "6:10 - 8:00 PM", "SCI330", 25);
sec5 = c3.ScheduleSection("M", "6:10 - 8:00 PM", "GOVT101", 20);
sec6 = c4.ScheduleSection("Th", "4:10 - 6:00 PM", "SCI241", 15);
sec7 = c5.ScheduleSection("F", "4:10 - 6:00 PM", "ARTS25", 40);
// Add these to the Schedule of Classes.
scheduleOfClasses.AddSection(sec1);
scheduleOfClasses.AddSection(sec2);
scheduleOfClasses.AddSection(sec3);
scheduleOfClasses.AddSection(sec4);
scheduleOfClasses.AddSection(sec5);
scheduleOfClasses.AddSection(sec6);
scheduleOfClasses.AddSection(sec7);
// Recruit a professor to teach each of the sections.
p3.AgreeToTeach(sec1);
p2.AgreeToTeach(sec2);
p1.AgreeToTeach(sec3);
p3.AgreeToTeach(sec4);
p1.AgreeToTeach(sec5);
p2.AgreeToTeach(sec6);
p3.AgreeToTeach(sec7);
Console.WriteLine("Student registration has begun!");
Console.WriteLine("");
// Students drop/add courses.
Console.WriteLine("Student " + s1.Name +
" is attempting to enroll in " +
sec1.ToString());
EnrollFlags status = sec1.Enroll(s1);
// Note the use of a special method to interpret
// and display the outcome of this enrollment request.
// (We could have included the code in-line here, but
// since (a) it is rather complex and (b) it will need
// to be repeated for all subsequent enrollment requests
// below, it made sense to turn it into a reusable method
// instead.)
ReportStatus(status);
// Try enrolling the same Student in a different Section
// of the SAME Course!
Console.WriteLine("Student " + s1.Name +
" is attempting to enroll in " +
sec2.ToString());
status = sec2.Enroll(s1);
ReportStatus(status);
Console.WriteLine("Student " + s2.Name +
" is attempting to enroll in " +
sec2.ToString());
status = sec2.Enroll(s2);
ReportStatus(status);
Console.WriteLine("Student " + s2.Name +
" is attempting to enroll in " +
sec3.ToString());
status = sec3.Enroll(s2);
ReportStatus(status);
Console.WriteLine("Student " + s2.Name +
" is attempting to enroll in " +
sec7.ToString());
status = sec7.Enroll(s2);
ReportStatus(status);
Console.WriteLine("Student " + s3.Name +
" is attempting to enroll in " +
sec1.ToString());
status = sec1.Enroll(s3);
ReportStatus(status);
Console.WriteLine("Student " + s3.Name +
" is attempting to enroll in " +
sec5.ToString());
status = sec5.Enroll(s3);
ReportStatus(status);
// Skip a line.
Console.WriteLine("");
// When the dust settles, here's what folks wound up
// being registered for:
//
// sec1: s1, s3
// sec2: s2
// sec7: s2
// Semester is finished (boy, that was quick!). Professors
// assign grades.
sec1.PostGrade(s1, "C+");
sec1.PostGrade(s3, "A");
sec2.PostGrade(s2, "B+");
sec7.PostGrade(s2, "A-");
// Let's see if everything got set up properly
// by calling various display methods!
Console.WriteLine("====================");
Console.WriteLine("Schedule of Classes:");
Console.WriteLine("====================");
Console.WriteLine("");
scheduleOfClasses.Display();
Console.WriteLine("======================");
Console.WriteLine("Professor Information:");
Console.WriteLine("======================");
Console.WriteLine("");
p1.Display();
Console.WriteLine("");
p2.Display();
Console.WriteLine("");
p3.Display();
Console.WriteLine("");
Console.WriteLine("====================");
Console.WriteLine("Student Information:");
Console.WriteLine("====================");
Console.WriteLine("");
s1.Display();
Console.WriteLine("");
s2.Display();
Console.WriteLine("");
s3.Display();
}
