entity framework: retrieve Id of new entry upon creation

is there a way to get the id of the last entry created without asking for it specifically?

I am doing this:

 public async Task SaveItemAsync(tblUsers item) //change here
        {
            if (item == null) throw new ArgumentException(nameof(item));
            await InitializeAsync();
            if (item.Id == null)
            {
                try
                {
                    await _table.InsertItemAsync(item);
                }
                catch (Exception e)
                {
                    var message = e.Message;
                }
            }
            else await _table.ReplaceItemAsync(item);
        }

anod nothing is returned but an entry with a Id is created on the db.

How can I alter that so that the Id of the new entry is returned?

>Solution :

If id is database generated Entity Framework should fill it in the inserted entity, i.e.:

_ctx.Items.Add(item);
await _ctx.SaveChangesAsync();
var insertedId = item.Id;

P.S.

Possibly you might want to use something like item.Id == default to check if the id is empty.