public ActionResult Create(Department department)
{
if (ModelState.IsValid)
{
db.Departments.Add(department);
db.SaveChanges();
return RedirectToAction("Index");
}
ViewBag.PersonID = new SelectList(db.Instructors, "PersonID ", "FullName", department.PersonID );
return View(department);
}
public ActionResult DeleteConfirmed(Department department)
{
try
{
db.Entry(department).State = EntityState.Deleted;
db.SaveChanges();
return RedirectToAction("Index");
}
catch (DbUpdateConcurrencyException)
{
return RedirectToAction("Delete",
new System.Web.Routing.RouteValueDictionary { { "concurrencyError", true } });
}
catch (DataException)
{
//Log the error (add a variable name after Exception)
ModelState.AddModelError(string.Empty, "Unable to save changes. Try again, and if the problem persists contact your system administrator.");
return View(department);
}
}
public ActionResult DeleteConfirmed(Department department)
{
try
{
db.Entry(department).State = EntityState.Deleted;//delete the department
db.SaveChanges();
return RedirectToAction("Index");
}
catch (DbUpdateConcurrencyException)
{
//if the concerrency occure, sent the value concurrencyError= true when the page is direct
return RedirectToAction("Delete",
new System.Web.Routing.RouteValueDictionary {{"concurrencyError", true}});
}
catch(DataException)
{
ModelState.AddModelError(string.Empty,
"Unable to save changes. Try again, and if the problem persists contact your system administrator.");
return View(department);
}
}
private void ValidateOneAdministratorAssignmentPerInstructor(Department department)
{
if (department.PersonID != null)
{
var duplicateDepartment = db.Departments
.Include("Administrator")
.Where(d => d.PersonID == department.PersonID)
.AsNoTracking()//specify no tracking
.FirstOrDefault();
if (duplicateDepartment != null && duplicateDepartment.DepartmentID != department.DepartmentID)
{
var errorMessage = String.Format(
"Instructor {0} {1} is already administrator of the {2} department.",
duplicateDepartment.Administrator.FirstMidName,
duplicateDepartment.Administrator.LastName,
duplicateDepartment.Name);
ModelState.AddModelError(string.Empty, errorMessage);
}
}
}
public ActionResult Edit(Department department)
{
try
{
if (ModelState.IsValid)
{
ValidateOneAdministratorAssignmentPerInstructor(department);
}
if (ModelState.IsValid)
{
db.Entry(department).State = EntityState.Modified;
db.SaveChanges();
return RedirectToAction("Index");
}
}
catch (DbUpdateConcurrencyException ex)
{
var entry = ex.Entries.Single();
var databaseValues = (Department)entry.GetDatabaseValues().ToObject();
var clientValues = (Department)entry.Entity;
// Checking the change for each textbox
if (databaseValues.Name != clientValues.Name)
{
ModelState.AddModelError("Name", "Current value: " + databaseValues.Name);
}
if (databaseValues.Budget != clientValues.Budget)
{
ModelState.AddModelError("Budget", "Current value: " + String.Format("{0:c}", databaseValues.Budget));
}
if (databaseValues.StartDate != clientValues.StartDate)
{
ModelState.AddModelError("StartDate", "Current value: " + string.Format("{0:d}", databaseValues.StartDate));
}
if (databaseValues.PersonID != clientValues.PersonID )
{
ModelState.AddModelError("PersonID ", "Current value: " + db.Instructors.Find(databaseValues.PersonID ).FullName);
}
ModelState.AddModelError(string.Empty, "The record you attempted to edit "
+ "was modified by another user after you got the original value. The "
+ "edit operation was canceled and the current values in the database "
+ "have been displayed. If you still want to edit this record, click "
+ "the Save button again. Otherwise click the Back to List hyperlink.");
department.Timestamp = databaseValues.Timestamp;// keep track of the timeStemp for the change
}
catch (DataException)
{
ModelState.AddModelError(string.Empty, "Unable to save changes. Try again, and if the problem persists contact your system administrator.");
}
ViewBag.PersonID = new SelectList(db.Instructors, "PersonID ", "FullName", department.PersonID );
return View(department);
}
public async Task<ActionResult> Delete(Department department)
{
try
{
UoW.Departments.Remove(department);
await UoW.CommitAsync();
return RedirectToAction("Index")
.WithSuccess("Department Deleted Successfully!");
}
catch (DbUpdateConcurrencyException)
{
return RedirectToAction("Delete", new { concurrencyError = true, id = department.Id })
.WithError("Error occured! Look at the info below.");
}
catch (DataException /* dex */)
{
//Log the error (uncomment dex variable name after DataException and add a line here to write a log.
ModelState.AddModelError(string.Empty, "Unable to delete. Try again, and if the problem persists contact your system administrator.");
return View(department).WithError("Error occured! Look at the info below.");
}
}
public async Task<ActionResult> Edit(DepartmentEditForm form)
{
string[] fieldsToBind = new string[]
{
"Name", "Budget", "StartDate", "InstructorID", "RowVersion"
};
if (form == null)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
var departmentToUpdate = await UoW.Departments.GetByIdAsync(form.Id);
if (departmentToUpdate == null)
{
Department deletedDepartment = new Department();
TryUpdateModel(deletedDepartment, fieldsToBind);
ModelState.AddModelError(string.Empty, "Unable to save changes. The department was deleted by another user.");
return View(deletedDepartment).WithError("Error occured! Look at the info below.");
}
if (TryUpdateModel(departmentToUpdate, fieldsToBind))
{
try
{
departmentToUpdate.RowVersion = form.RowVersion;
await UoW.CommitAsync();
return RedirectToAction("Index")
.WithSuccess("Department Updated Successfully!");
}
catch (DbUpdateConcurrencyException ex)
{
var entry = ex.Entries.Single();
var clientValues = (Department)entry.Entity;
var databaseEntry = entry.GetDatabaseValues();
if (databaseEntry == null)
{
ModelState.AddModelError(string.Empty, "Unable to save changes. The department was deleted by another user.");
}
else
{
var databaseValues = (Department)databaseEntry.ToObject();
if (databaseValues.Name != clientValues.Name)
ModelState.AddModelError("Name", "Current value: " + databaseValues.Name);
if (databaseValues.Budget != clientValues.Budget)
ModelState.AddModelError("Budget", "Current value: " + string.Format("{0:c}", databaseValues.Budget));
if (databaseValues.StartDate != clientValues.StartDate)
ModelState.AddModelError("StartDate", "Current value: " + string.Format("{0:d}", databaseValues.StartDate));
if (databaseValues.InstructorId != clientValues.InstructorId)
ModelState.AddModelError("InstructorId", "Current value: " + UoW.Instructors.GetById(databaseValues.InstructorId.Value).FullName);
ModelState.AddModelError(string.Empty, "The record you attempted to edit "
+ "was modified by another user after you got the original value. The "
+ "edit operation was canceled and the current values in the database "
+ "have been displayed. If you still want to edit this record, click "
+ "the Save button again. Otherwise click the Back to List hyperlink.");
departmentToUpdate.RowVersion = databaseValues.RowVersion;
}
}
catch (RetryLimitExceededException /* dex */)
{
//Log the error (uncomment dex variable name and add a line here to write a log.
ModelState.AddModelError("", "Unable to save changes. Try again, and if the problem persists, see your system administrator.");
}
}
return View(departmentToUpdate).WithError("Error occured! Look at the info below.");
}
public static void Initialize(SchoolContext context)
{
//context.Database.EnsureCreated();
// Look for any students.
if (context.Students.Any())
{
return; // DB has been seeded
}
var students = new Student[]
{
new Student { FirstMidName = "Carson", LastName = "Alexander",
EnrollmentDate = DateTime.Parse("2010-09-01") },
new Student { FirstMidName = "Meredith", LastName = "Alonso",
EnrollmentDate = DateTime.Parse("2012-09-01") },
new Student { FirstMidName = "Arturo", LastName = "Anand",
EnrollmentDate = DateTime.Parse("2013-09-01") },
new Student { FirstMidName = "Gytis", LastName = "Barzdukas",
EnrollmentDate = DateTime.Parse("2012-09-01") },
new Student { FirstMidName = "Yan", LastName = "Li",
EnrollmentDate = DateTime.Parse("2012-09-01") },
new Student { FirstMidName = "Peggy", LastName = "Justice",
EnrollmentDate = DateTime.Parse("2011-09-01") },
new Student { FirstMidName = "Laura", LastName = "Norman",
EnrollmentDate = DateTime.Parse("2013-09-01") },
new Student { FirstMidName = "Nino", LastName = "Olivetto",
EnrollmentDate = DateTime.Parse("2005-09-01") }
};
foreach (Student s in students)
{
context.Students.Add(s);
}
context.SaveChanges();
var instructors = new Instructor[]
{
new Instructor { FirstMidName = "Kim", LastName = "Abercrombie",
HireDate = DateTime.Parse("1995-03-11") },
new Instructor { FirstMidName = "Fadi", LastName = "Fakhouri",
HireDate = DateTime.Parse("2002-07-06") },
new Instructor { FirstMidName = "Roger", LastName = "Harui",
HireDate = DateTime.Parse("1998-07-01") },
new Instructor { FirstMidName = "Candace", LastName = "Kapoor",
HireDate = DateTime.Parse("2001-01-15") },
new Instructor { FirstMidName = "Roger", LastName = "Zheng",
HireDate = DateTime.Parse("2004-02-12") }
};
foreach (Instructor i in instructors)
{
context.Instructors.Add(i);
}
context.SaveChanges();
var departments = new Department[]
{
new Department { Name = "English", Budget = 350000,
StartDate = DateTime.Parse("2007-09-01"),
InstructorID = instructors.Single( i => i.LastName == "Abercrombie").ID },
new Department { Name = "Mathematics", Budget = 100000,
StartDate = DateTime.Parse("2007-09-01"),
InstructorID = instructors.Single( i => i.LastName == "Fakhouri").ID },
new Department { Name = "Engineering", Budget = 350000,
StartDate = DateTime.Parse("2007-09-01"),
InstructorID = instructors.Single( i => i.LastName == "Harui").ID },
new Department { Name = "Economics", Budget = 100000,
StartDate = DateTime.Parse("2007-09-01"),
InstructorID = instructors.Single( i => i.LastName == "Kapoor").ID }
};
foreach (Department d in departments)
{
context.Departments.Add(d);
}
context.SaveChanges();
var courses = new Course[]
{
new Course {CourseID = 1050, Title = "Chemistry", Credits = 3,
DepartmentID = departments.Single( s => s.Name == "Engineering").DepartmentID
},
new Course {CourseID = 4022, Title = "Microeconomics", Credits = 3,
DepartmentID = departments.Single( s => s.Name == "Economics").DepartmentID
},
new Course {CourseID = 4041, Title = "Macroeconomics", Credits = 3,
DepartmentID = departments.Single( s => s.Name == "Economics").DepartmentID
},
new Course {CourseID = 1045, Title = "Calculus", Credits = 4,
DepartmentID = departments.Single( s => s.Name == "Mathematics").DepartmentID
},
new Course {CourseID = 3141, Title = "Trigonometry", Credits = 4,
DepartmentID = departments.Single( s => s.Name == "Mathematics").DepartmentID
},
new Course {CourseID = 2021, Title = "Composition", Credits = 3,
DepartmentID = departments.Single( s => s.Name == "English").DepartmentID
},
new Course {CourseID = 2042, Title = "Literature", Credits = 4,
DepartmentID = departments.Single( s => s.Name == "English").DepartmentID
},
};
foreach (Course c in courses)
{
context.Courses.Add(c);
}
context.SaveChanges();
var officeAssignments = new OfficeAssignment[]
{
new OfficeAssignment {
InstructorID = instructors.Single( i => i.LastName == "Fakhouri").ID,
Location = "Smith 17" },
new OfficeAssignment {
InstructorID = instructors.Single( i => i.LastName == "Harui").ID,
Location = "Gowan 27" },
new OfficeAssignment {
InstructorID = instructors.Single( i => i.LastName == "Kapoor").ID,
Location = "Thompson 304" },
};
foreach (OfficeAssignment o in officeAssignments)
{
context.OfficeAssignments.Add(o);
}
context.SaveChanges();
var courseInstructors = new CourseAssignment[]
{
new CourseAssignment {
CourseID = courses.Single(c => c.Title == "Chemistry" ).CourseID,
InstructorID = instructors.Single(i => i.LastName == "Kapoor").ID
},
new CourseAssignment {
CourseID = courses.Single(c => c.Title == "Chemistry" ).CourseID,
InstructorID = instructors.Single(i => i.LastName == "Harui").ID
},
new CourseAssignment {
CourseID = courses.Single(c => c.Title == "Microeconomics" ).CourseID,
InstructorID = instructors.Single(i => i.LastName == "Zheng").ID
},
new CourseAssignment {
CourseID = courses.Single(c => c.Title == "Macroeconomics" ).CourseID,
InstructorID = instructors.Single(i => i.LastName == "Zheng").ID
},
new CourseAssignment {
CourseID = courses.Single(c => c.Title == "Calculus" ).CourseID,
InstructorID = instructors.Single(i => i.LastName == "Fakhouri").ID
},
new CourseAssignment {
CourseID = courses.Single(c => c.Title == "Trigonometry" ).CourseID,
InstructorID = instructors.Single(i => i.LastName == "Harui").ID
},
new CourseAssignment {
CourseID = courses.Single(c => c.Title == "Composition" ).CourseID,
InstructorID = instructors.Single(i => i.LastName == "Abercrombie").ID
},
new CourseAssignment {
CourseID = courses.Single(c => c.Title == "Literature" ).CourseID,
InstructorID = instructors.Single(i => i.LastName == "Abercrombie").ID
},
};
foreach (CourseAssignment ci in courseInstructors)
{
context.CourseAssignments.Add(ci);
}
context.SaveChanges();
var enrollments = new Enrollment[]
{
new Enrollment {
StudentID = students.Single(s => s.LastName == "Alexander").ID,
CourseID = courses.Single(c => c.Title == "Chemistry" ).CourseID,
Grade = Grade.A
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Alexander").ID,
CourseID = courses.Single(c => c.Title == "Microeconomics" ).CourseID,
Grade = Grade.C
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Alexander").ID,
CourseID = courses.Single(c => c.Title == "Macroeconomics" ).CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Alonso").ID,
CourseID = courses.Single(c => c.Title == "Calculus" ).CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Alonso").ID,
CourseID = courses.Single(c => c.Title == "Trigonometry" ).CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Alonso").ID,
CourseID = courses.Single(c => c.Title == "Composition" ).CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Anand").ID,
CourseID = courses.Single(c => c.Title == "Chemistry" ).CourseID
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Anand").ID,
CourseID = courses.Single(c => c.Title == "Microeconomics").CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Barzdukas").ID,
CourseID = courses.Single(c => c.Title == "Chemistry").CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Li").ID,
CourseID = courses.Single(c => c.Title == "Composition").CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Justice").ID,
CourseID = courses.Single(c => c.Title == "Literature").CourseID,
Grade = Grade.B
}
};
foreach (Enrollment e in enrollments)
{
var enrollmentInDataBase = context.Enrollments.Where(
s =>
s.Student.ID == e.StudentID &&
s.Course.CourseID == e.CourseID).SingleOrDefault();
if (enrollmentInDataBase == null)
{
context.Enrollments.Add(e);
}
}
context.SaveChanges();
}
public async Task<IActionResult> Delete(Department department)
{
try
{
if (await _context.Departments.AnyAsync(m => m.DepartmentID == department.DepartmentID))
{
_context.Departments.Remove(department);
await _context.SaveChangesAsync();
}
return RedirectToAction("Index");
}
catch (DbUpdateConcurrencyException /* ex */)
{
//Log the error (uncomment ex variable name and write a log.)
return RedirectToAction("Delete", new { concurrencyError = true, id = department.DepartmentID });
}
}
public async Task<IActionResult> Edit(int? id, byte[] rowVersion)
{
if (id == null)
{
return NotFound();
}
var departmentToUpdate = await _context.Departments.Include(i => i.Administrator).SingleOrDefaultAsync(m => m.DepartmentID == id);
if (departmentToUpdate == null)
{
Department deletedDepartment = new Department();
await TryUpdateModelAsync(deletedDepartment);
ModelState.AddModelError(string.Empty,
"Unable to save changes. The department was deleted by another user.");
ViewData["InstructorID"] = new SelectList(_context.Instructors, "ID", "FullName", departmentToUpdate.InstructorID);
return View(deletedDepartment);
}
_context.Entry(departmentToUpdate).Property("RowVersion").OriginalValue = rowVersion;
if (await TryUpdateModelAsync<Department>(
departmentToUpdate,
"",
s => s.Name, s => s.StartDate, s => s.Budget, s => s.InstructorID))
{
try
{
await _context.SaveChangesAsync();
return RedirectToAction("Index");
}
catch (DbUpdateConcurrencyException ex)
{
var exceptionEntry = ex.Entries.Single();
// Using a NoTracking query means we get the entity but it is not tracked by the context
// and will not be merged with existing entities in the context.
var databaseEntity = await _context.Departments
.AsNoTracking()
.SingleAsync(d => d.DepartmentID == ((Department)exceptionEntry.Entity).DepartmentID);
var databaseEntry = _context.Entry(databaseEntity);
var databaseName = (string)databaseEntry.Property("Name").CurrentValue;
var proposedName = (string)exceptionEntry.Property("Name").CurrentValue;
if (databaseName != proposedName)
{
ModelState.AddModelError("Name", $"Current value: {databaseName}");
}
var databaseBudget = (Decimal)databaseEntry.Property("Budget").CurrentValue;
var proposedBudget = (Decimal)exceptionEntry.Property("Budget").CurrentValue;
if (databaseBudget != proposedBudget)
{
ModelState.AddModelError("Budget", $"Current value: {databaseBudget:c}");
}
var databaseStartDate = (DateTime)databaseEntry.Property("StartDate").CurrentValue;
var proposedStartDate = (DateTime)exceptionEntry.Property("StartDate").CurrentValue;
if (databaseStartDate != proposedStartDate)
{
ModelState.AddModelError("StartDate", $"Current value: {databaseStartDate:d}");
}
var databaseInstructorID = (int)databaseEntry.Property("InstructorID").CurrentValue;
var proposedInstructorID = (int)exceptionEntry.Property("InstructorID").CurrentValue;
if (databaseInstructorID != proposedInstructorID)
{
Instructor databaseInstructor = await _context.Instructors.SingleAsync(i => i.ID == databaseInstructorID);
ModelState.AddModelError("InstructorID", $"Current value: {databaseInstructor.FullName}");
}
ModelState.AddModelError(string.Empty, "The record you attempted to edit "
+ "was modified by another user after you got the original value. The "
+ "edit operation was canceled and the current values in the database "
+ "have been displayed. If you still want to edit this record, click "
+ "the Save button again. Otherwise click the Back to List hyperlink.");
departmentToUpdate.RowVersion = (byte[])databaseEntry.Property("RowVersion").CurrentValue;
ModelState.Remove("RowVersion");
}
}
ViewData["InstructorID"] = new SelectList(_context.Instructors, "ID", "FullName", departmentToUpdate.InstructorID);
return View(departmentToUpdate);
}
public static void Initialize(SchoolContext context)
{
//context.Database.EnsureCreated();
// Look for any students.
if (context.Student.Any())
{
return; // DB has been seeded
}
var students = new Student[]
{
new Student {
FirstMidName = "Carson", LastName = "Alexander",
EnrollmentDate = DateTime.Parse("2010-09-01")
},
new Student {
FirstMidName = "Meredith", LastName = "Alonso",
EnrollmentDate = DateTime.Parse("2012-09-01")
},
new Student {
FirstMidName = "Arturo", LastName = "Anand",
EnrollmentDate = DateTime.Parse("2013-09-01")
},
new Student {
FirstMidName = "Gytis", LastName = "Barzdukas",
EnrollmentDate = DateTime.Parse("2012-09-01")
},
new Student {
FirstMidName = "Yan", LastName = "Li",
EnrollmentDate = DateTime.Parse("2012-09-01")
},
new Student {
FirstMidName = "Peggy", LastName = "Justice",
EnrollmentDate = DateTime.Parse("2011-09-01")
},
new Student {
FirstMidName = "Laura", LastName = "Norman",
EnrollmentDate = DateTime.Parse("2013-09-01")
},
new Student {
FirstMidName = "Nino", LastName = "Olivetto",
EnrollmentDate = DateTime.Parse("2005-09-01")
}
};
foreach (Student s in students)
{
context.Student.Add(s);
}
context.SaveChanges();
var instructors = new Instructor[]
{
new Instructor {
FirstMidName = "Kim", LastName = "Abercrombie",
HireDate = DateTime.Parse("1995-03-11")
},
new Instructor {
FirstMidName = "Fadi", LastName = "Fakhouri",
HireDate = DateTime.Parse("2002-07-06")
},
new Instructor {
FirstMidName = "Roger", LastName = "Harui",
HireDate = DateTime.Parse("1998-07-01")
},
new Instructor {
FirstMidName = "Candace", LastName = "Kapoor",
HireDate = DateTime.Parse("2001-01-15")
},
new Instructor {
FirstMidName = "Roger", LastName = "Zheng",
HireDate = DateTime.Parse("2004-02-12")
}
};
foreach (Instructor i in instructors)
{
context.Instructors.Add(i);
}
context.SaveChanges();
var departments = new Department[]
{
new Department {
Name = "English", Budget = 350000,
StartDate = DateTime.Parse("2007-09-01"),
InstructorID = instructors.Single(i => i.LastName == "Abercrombie").ID
},
new Department {
Name = "Mathematics", Budget = 100000,
StartDate = DateTime.Parse("2007-09-01"),
InstructorID = instructors.Single(i => i.LastName == "Fakhouri").ID
},
new Department {
Name = "Engineering", Budget = 350000,
StartDate = DateTime.Parse("2007-09-01"),
InstructorID = instructors.Single(i => i.LastName == "Harui").ID
},
new Department {
Name = "Economics", Budget = 100000,
StartDate = DateTime.Parse("2007-09-01"),
InstructorID = instructors.Single(i => i.LastName == "Kapoor").ID
}
};
foreach (Department d in departments)
{
context.Departments.Add(d);
}
context.SaveChanges();
var courses = new Course[]
{
new Course {
CourseID = 1050, Title = "Chemistry", Credits = 3,
DepartmentID = departments.Single(s => s.Name == "Engineering").DepartmentID
},
new Course {
CourseID = 4022, Title = "Microeconomics", Credits = 3,
DepartmentID = departments.Single(s => s.Name == "Economics").DepartmentID
},
new Course {
CourseID = 4041, Title = "Macroeconomics", Credits = 3,
DepartmentID = departments.Single(s => s.Name == "Economics").DepartmentID
},
new Course {
CourseID = 1045, Title = "Calculus", Credits = 4,
DepartmentID = departments.Single(s => s.Name == "Mathematics").DepartmentID
},
new Course {
CourseID = 3141, Title = "Trigonometry", Credits = 4,
DepartmentID = departments.Single(s => s.Name == "Mathematics").DepartmentID
},
new Course {
CourseID = 2021, Title = "Composition", Credits = 3,
DepartmentID = departments.Single(s => s.Name == "English").DepartmentID
},
new Course {
CourseID = 2042, Title = "Literature", Credits = 4,
DepartmentID = departments.Single(s => s.Name == "English").DepartmentID
},
};
foreach (Course c in courses)
{
context.Courses.Add(c);
}
context.SaveChanges();
var officeAssignments = new OfficeAssignment[]
{
new OfficeAssignment {
InstructorID = instructors.Single(i => i.LastName == "Fakhouri").ID,
Location = "Smith 17"
},
new OfficeAssignment {
InstructorID = instructors.Single(i => i.LastName == "Harui").ID,
Location = "Gowan 27"
},
new OfficeAssignment {
InstructorID = instructors.Single(i => i.LastName == "Kapoor").ID,
Location = "Thompson 304"
},
};
foreach (OfficeAssignment o in officeAssignments)
{
context.OfficeAssignments.Add(o);
}
context.SaveChanges();
var courseInstructors = new CourseAssignment[]
{
new CourseAssignment {
CourseID = courses.Single(c => c.Title == "Chemistry").CourseID,
InstructorID = instructors.Single(i => i.LastName == "Kapoor").ID
},
new CourseAssignment {
CourseID = courses.Single(c => c.Title == "Chemistry").CourseID,
InstructorID = instructors.Single(i => i.LastName == "Harui").ID
},
new CourseAssignment {
CourseID = courses.Single(c => c.Title == "Microeconomics").CourseID,
InstructorID = instructors.Single(i => i.LastName == "Zheng").ID
},
new CourseAssignment {
CourseID = courses.Single(c => c.Title == "Macroeconomics").CourseID,
InstructorID = instructors.Single(i => i.LastName == "Zheng").ID
},
new CourseAssignment {
CourseID = courses.Single(c => c.Title == "Calculus").CourseID,
InstructorID = instructors.Single(i => i.LastName == "Fakhouri").ID
},
new CourseAssignment {
CourseID = courses.Single(c => c.Title == "Trigonometry").CourseID,
InstructorID = instructors.Single(i => i.LastName == "Harui").ID
},
new CourseAssignment {
CourseID = courses.Single(c => c.Title == "Composition").CourseID,
InstructorID = instructors.Single(i => i.LastName == "Abercrombie").ID
},
new CourseAssignment {
CourseID = courses.Single(c => c.Title == "Literature").CourseID,
InstructorID = instructors.Single(i => i.LastName == "Abercrombie").ID
},
};
foreach (CourseAssignment ci in courseInstructors)
{
context.CourseAssignments.Add(ci);
}
context.SaveChanges();
var enrollments = new Enrollment[]
{
new Enrollment {
StudentID = students.Single(s => s.LastName == "Alexander").ID,
CourseID = courses.Single(c => c.Title == "Chemistry").CourseID,
Grade = Grade.A
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Alexander").ID,
CourseID = courses.Single(c => c.Title == "Microeconomics").CourseID,
Grade = Grade.C
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Alexander").ID,
CourseID = courses.Single(c => c.Title == "Macroeconomics").CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Alonso").ID,
CourseID = courses.Single(c => c.Title == "Calculus").CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Alonso").ID,
CourseID = courses.Single(c => c.Title == "Trigonometry").CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Alonso").ID,
CourseID = courses.Single(c => c.Title == "Composition").CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Anand").ID,
CourseID = courses.Single(c => c.Title == "Chemistry").CourseID
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Anand").ID,
CourseID = courses.Single(c => c.Title == "Microeconomics").CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Barzdukas").ID,
CourseID = courses.Single(c => c.Title == "Chemistry").CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Li").ID,
CourseID = courses.Single(c => c.Title == "Composition").CourseID,
Grade = Grade.B
},
new Enrollment {
StudentID = students.Single(s => s.LastName == "Justice").ID,
CourseID = courses.Single(c => c.Title == "Literature").CourseID,
Grade = Grade.B
}
};
foreach (Enrollment e in enrollments)
{
var enrollmentInDataBase = context.Enrollment.Where(
s =>
s.Student.ID == e.StudentID &&
s.Course.CourseID == e.CourseID).SingleOrDefault();
if (enrollmentInDataBase == null)
{
context.Enrollment.Add(e);
}
}
context.SaveChanges();
}
