Custom Autohistory about autohistory HOT 1 OPEN

if (ModelState.IsValid)
{
    try
    {
        _context.Update(cust);
        _context.EnsureAutoHistory(() => new CustomAutoHistory()
        {
            UserId = Convert.ToInt16(User.FindFirstValue(ClaimTypes.NameIdentifier))
        });
        await _context.SaveChangesAsync();
    }
    catch (DbUpdateConcurrencyException)
    {
        if (!ClientExists(cust.Id))
        {
            return NotFound();
        }
        else
        {
            throw;
        }
    }
}