public static void UpdateStudentCourse(int studentCourseId, int studentId, int courseId, int mark)
{
bool submitChange = false;
//update a student course
StudentCourse studentCourse = db.StudentCourses.Single(sc => sc.Id.Equals(studentCourseId));
if (studentCourse.studentId != studentId)
{
studentCourse.studentId = studentId;
submitChange = true;
}
if (studentCourse.courseId != courseId)
{
studentCourse.courseId = courseId;
submitChange = true;
}
if (studentCourse.finalGrade != mark)
{
studentCourse.finalGrade = mark;
submitChange = true;
}
if (submitChange)
{
db.SubmitChanges();
}
}
public static void DeleteStudentCourse(int studentCourseId)
{
//delete a student course by setting its isDeleted flag to 1
StudentCourse studentCourse = db.StudentCourses.Single(sc => sc.Id.Equals(studentCourseId));
studentCourse.isDeleted = 1;
db.SubmitChanges();
}
public static void AddStudentCourse(int studentId, int courseId, int mark)
{
//add a new student course record by suppling the student id, course id and mark
StudentCourse studentCourse = new StudentCourse();
studentCourse.studentId = studentId;
studentCourse.courseId = courseId;
studentCourse.finalGrade = mark;
db.StudentCourses.InsertOnSubmit(studentCourse);
db.SubmitChanges();
}
partial void DeleteStudentCourse(StudentCourse instance);
partial void UpdateStudentCourse(StudentCourse instance);
partial void InsertStudentCourse(StudentCourse instance);