Calcular todos los pares posibles de elementos de dos listas?

Question

Tengo dos matrices:

string[] Group = { "A", null, "B", null, "C", null }; 

string[] combination = { "C#", "Java", null, "C++", null }; 

Deseo devolver todas las combinaciones posibles como:

{ {"A","C#"} , {"A","Java"} , {"A","C++"},{"B","C#"},............ } 

La nula debe ser ignorada.

Answer 1

Group.Where(x => x != null) 
    .SelectMany(g => combination.Where(c => c != null) 
           .Select(c => new {Group = g, Combination = c})); 

alternativa:

from g in Group where g != null 
from c in combination where c != null 
select new { Group = g, Combination = c }