Question

I have a process in my application that returns two different lists of objects. The objects in both lists are of the same type. I need to cross join the two lists together to form one integrated list. If it were SQL, it’d be something like this:

SELECT A.KEY, A.DATA AS DATA1, B.DATA AS DATA2
FROM TABLE1 AS A
CROSS JOIN TABLE2

This is pure LINQ as the data is returned in actual generic List<> collections.

What is the LINQ syntax for this operation?

Tony

Answer 1

var res = from t1 in table1
          from t2 in table2
          select new
          {
              KEY = t1.KEY,
              DATA1 = t1.DATA,
              DATA2 = t2.DATA,
          };