//Updates a course
public IActionResult OnPost()
{
if (!ModelState.IsValid)
{
return(Page());
}
_context.Attach(Course).State = EntityState.Modified;
try
{
_context.SaveChanges();
}
catch (DbUpdateConcurrencyException)
{
if (!CourseExists(Course.Id))
{
return(NotFound());
}
else
{
throw;
}
}
return(RedirectToPage("./Index"));
}
//Adds the result.
public IActionResult OnPost()
{
if (!ModelState.IsValid)
{
return(Page());
}
_context.Result.Add(Result);
_context.SaveChanges();
return(RedirectToPage("./Index"));
}
//Removes a student uses a lamda to check whether the student exists.
public IActionResult OnPost(int?id)
{
if (id == null)
{
return(NotFound());
}
Student = (from student in _context.Student
where student.Id == id select student).FirstOrDefault();
if (Student != null)
{
_context.Student.Remove(Student);
_context.SaveChanges();
}
return(RedirectToPage("./Index"));
}
//Deletes the result .uses linq query to get the result .
public IActionResult OnPost(int?id)
{
if (id == null)
{
return(NotFound());
}
Result = (from results in _context.Result
where results.Id == id select results).FirstOrDefault();
if (Result != null)
{
_context.Result.Remove(Result);
_context.SaveChanges();
}
return(RedirectToPage("./Index"));
}
//Removes the course. uses linq query to return the course details
public IActionResult OnPost(int?id)
{
if (id == null)
{
return(NotFound());
}
Course = (from course in _context.Course
where course.Id == id select course).FirstOrDefault();
if (Course != null)
{
_context.Course.Remove(Course);
_context.SaveChanges();
}
return(RedirectToPage("./Index"));
}
