static void Main()
{
Database.SetInitializer(new MigrateDatabaseToLatestVersion<StudentsSystemContext, Configuration>());
using (StudentsSystemContext dbContext = new StudentsSystemContext())
{
var firstHomework = new Homework()
{
Content = "Simple database1",
TimeSent = DateTime.Now,
};
var secondHomework = new Homework()
{
Content = "Simple database2",
TimeSent = DateTime.Now,
};
var student = new Student()
{
FirstName = "Nikolay",
LastName = "Kostadinov",
Number = "965552",
};
var course = new Course()
{
Name = "DataBase",
Description = "Entity Framework Code First",
Materials = "Lections, homework"
};
student.Homeworks.Add(firstHomework);
student.Homeworks.Add(secondHomework);
student.Courses.Add(course);
course.Homeworks.Add(secondHomework);
course.Students.Add(student);
dbContext.Students.Add(student);
dbContext.Courses.Add(course);
dbContext.Homeworks.Add(firstHomework);
dbContext.Homeworks.Add(secondHomework);
dbContext.SaveChanges();
}
}
public IHttpActionResult Create(CourseModel item)
{
if (!this.ModelState.IsValid)
{
return BadRequest(ModelState);
}
var newItem = new Course()
{
Name = item.Name
};
this.data.Courses.Add(newItem);
this.data.Courses.SaveChanges();
item.ID = newItem.ID;
return Ok(item);
}
public void Seed(int count)
{
Console.Write("Importing courses:");
var db = new StudentsSystemDbContext();
var allStudents = db
.Students
.OrderBy(s => Guid.NewGuid())
.ToList();
var allHomeworks = db
.Homeworks
.OrderBy(h => Guid.NewGuid())
.ToList();
for (int i = 0; i < count; i++)
{
var currentStudentInCourse = RandomGenerator.GetRandomNumber(10, 30);
var currentStartIndex = RandomGenerator.GetRandomNumber(0,
allStudents.Count - currentStudentInCourse - 1);
var studentsList = new HashSet<Student>();
for (int j = 0; j < currentStudentInCourse; j++)
{
studentsList.Add(allStudents[currentStartIndex]);
currentStartIndex++;
}
var currentHomeworsInCourse = RandomGenerator.GetRandomNumber(5, 15);
currentStartIndex = RandomGenerator.GetRandomNumber(0,
allHomeworks.Count - currentHomeworsInCourse - 1);
var homeworksList = new HashSet<Homework>();
for (int j = 0; j < currentHomeworsInCourse; j++)
{
homeworksList.Add(allHomeworks[currentStartIndex]);
currentStartIndex++;
}
var course = new Course
{
Name = RandomGenerator.GetRandomString(10, 100),
Description = RandomGenerator.GetRandomString(50, 500),
Students = studentsList,
Homeworks = homeworksList
};
db.Courses.Add(course);
if (i % 10 == 0)
{
Console.Write(".");
}
if (i % 100 == 0)
{
db.SaveChanges();
db.Dispose();
db = new StudentsSystemDbContext();
}
}
db.SaveChanges();
Console.WriteLine();
}
