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()
{
if (!ModelState.IsValid)
{
return(Page());
}
_context.Attach(Entry).State = EntityState.Modified;
try
{
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!EntryExists(Entry.EntryID))
{
return(NotFound());
}
else
{
throw;
}
}
return(RedirectToPage("./Index"));
}
public async Task <IActionResult> OnPostAsync()
{
if (!ModelState.IsValid)
{
return(Page());
}
_context.Entry.Add(Entry);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
public async Task <IActionResult> OnPostAsync(int?id)
{
if (id == null)
{
return(NotFound());
}
Entry = await _context.Entry.FindAsync(id);
if (Entry != null)
{
_context.Entry.Remove(Entry);
await _context.SaveChangesAsync();
}
return(RedirectToPage("./Index"));
}
public async Task <IActionResult> OnPostAsync(int?id)
{
if (!ModelState.IsValid)
{
return(Page());
}
var studentToUpdate = await _context.Student.FindAsync(id);
if (await TryUpdateModelAsync <Student>(
studentToUpdate,
"student",
s => s.FirstName, s => s.LastName, s => s.Teacher, s => s.CurrentBook, s => s.Section))
{
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.FirstName, s => s.LastName, s => s.Teacher, s => s.CurrentBook, s => s.Section))
{
_context.Student.Add(emptyStudent);
await _context.SaveChangesAsync();
return(RedirectToPage("./Index"));
}
return(null);
}