//public async Task<IActionResult> OnPostAsync(int? id)
//{
// if (id == null)
// {
// return NotFound();
// }
// Student = await _context.Student.FindAsync(id);
// if (Student != null)
// {
// _context.Student.Remove(Student);
// await _context.SaveChangesAsync();
// }
// return RedirectToPage("./Index");
//}
public async Task <IActionResult> OnPostAsync(int?id)
{
if (id == null)
{
return(NotFound());
}
var student = await _context.Student
.AsNoTracking()
.FirstOrDefaultAsync(m => m.ID == id);
if (student == null)
{
return(NotFound());
}
try
{
_context.Student.Remove(student);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
catch (DbUpdateException /* ex */)
{
//Log the error (uncomment ex variable name and write a log.)
return(RedirectToAction("./Delete",
new { id, saveChangesError = true }));
}
}
public async Task <IActionResult> OnPostAsync(int?id)
{
if (!ModelState.IsValid)
{
return(Page());
}
var studentToUpdate = await _context.Student.FindAsync(id);
//_context.Attach(Student).State = EntityState.Modified;
// try
// {
// await _context.SaveChangesAsync();
// }
// catch (DbUpdateConcurrencyException)
// {
// if (!StudentExists(Student.ID))
// {
// return NotFound();
// }
// else
// {
// throw;
// }
// }
// return RedirectToPage("./Index");
//}
//private bool StudentExists(int id)
//{
// return _context.Student.Any(e => e.ID == id);
//}
if (await TryUpdateModelAsync <Student>(
studentToUpdate,
"student",
s => s.FirstMidName, s => s.LastName, s => s.EnrollmentDate))
{
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
return(Page());
}
public async Task <IActionResult> OnPostAsync()
{
if (!ModelState.IsValid)
{
return(Page());
}
var emptyStudent = new Student();
if (await TryUpdateModelAsync <Student>(
emptyStudent,
"student", // Prefix for form value.
s => s.FirstMidName, s => s.LastName, s => s.EnrollmentDate))
{
_context.Student.Add(emptyStudent);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
return(null);
}