Firebase StartAt() 不起作用 - 没有它它返回相同的结果

Question

I'm trying to get the first 5 results (1-5), and then (6-10)... and so on. I save the last value I received, in order to StartAt where I stopped, but when I check the new values it still shows values 1-5 and not 6-10.

Also, I don't understand if I really have to use orderByChild while my keys are already sorted on DB.

My DB-

users
    +user1
    +user2
    +user3
    +user4
    +user5
    +user6
    .....
    +user50

First 1-5:

  task = await FirebaseDatabase.DefaultInstance.GetReference("users").OrderByValue().LimitToFirst(5).GetValueAsync().ContinueWith(t => t);

That works fine. Now I'm trying to get users 6-10

  lastUserId= "user5"
  task=null;
  task = await FirebaseDatabase.DefaultInstance.GetReference("users").OrderByValue().StartAt(lastUserId).LimitToFirst(5).GetValueAsync().ContinueWith(t => t);
  DataSnapshot dts = task.Result;
  foreach (DataSnapshot s in dts.Children)
  {
  Debug.Log(s.Key);
  }

output: user1 user2 user3 user4 user5 Why does it start from user1 if my code says StartAt("user5")?? What am I missing?

Answer 1

As per your comment, here is my (very short) answer:

You should use OrderByKey.StartAt('userId') rather than OrderByValue .

Glad I could help.