Question

I need something like this: Select name from users where id = 1 or id = 2.
I know I can do this:

_db.Users
.Where(u => u.Id == 1 || u.Id == 2);

But is there any alternative to this?
Is there something like this:

_db.User
.Where(u => u.Id == 1)
.Or
.Where(u => u.Id == 2)

Answer 1

Not directly. Remember, _db.Users.Where(u => u.Id == 1) is the user whose id is 1. You cannot get the user with id 2 from that, because it isn’t there.

You can use some other approach, such as

var user1 = _db.Users.Where(u => u.Id == 1);
var user2 = _db.Users.Where(u => u.Id == 2);
var users = user1.Union(user2);

or

var userids = new int[] { 1, 2 };
var users = _db.Users.Where(u => userids.Contains(u.Id));

though.