Question

Given an Entity, with two fields, int? and string :

EntityId    Name
--------    -----
    1       Name1
    2       Name2
    3       Name3
    4       Name4
 (null)     Name5
    6       Name6
    7       Name7

Using LINQ, how could I select the first 4 Entities, up to before the null value?

Answer 1

Seems like a case for TakeWhile:

var query = entities.TakeWhile(x => x.EntityId != null);

(Add ToList() or ToArray() as appropriate).