public async Task <IActionResult> OnPostAsync()
{
if (!ModelState.IsValid)
{
return(Page());
}
_context.Attach(Contact).State = EntityState.Modified;
try
{
await _context.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException)
{
if (!ContactExists(Contact.ContactId))
{
return(NotFound());
}
else
{
throw;
}
}
return(RedirectToPage("./Index"));
}