How can I do a Union all in Entity Framework LINQ To Entities?

Question

I came across a scenario where I had to use Union all, how can I achieve so in LINQ to entities ?

Answer 1

I believe Concat is what you're looking for.

var allResults = resultSet1.Concat(resultSet2);

Obviously, both result sets must use the same type. And I believe there my be other requirements about how the result sets are constructed in the first place, but I don't know all the details.