public async Task <IActionResult> OnPostAsync(int id)
{
if (ModelState.IsValid && !string.IsNullOrWhiteSpace(Author.LastName))
{
try
{
Author.Id = id;
db.Attach(Author).State = EntityState.Modified;
await db.SaveChangesAsync();
}
catch (DbUpdateConcurrencyException ex)
{
ViewData["Error"] = $"UpdateConcurrencyException: {ex.Message}";
return(RedirectToPage("./Index"));
}
}
return(RedirectToPage("./Index"));
}
