Join where order by .net framework

db.Zeiterfassung
  .Select(z => new { z.Zeit, z.Taetigkeit.Taetigkeit1, z.Firma.Name })
  .GroupBy(x => new { x.Taetigkeit1, x.Name })
  .Select(g => new Evaluation {
       companyName = g.Key.Name,
       skillName = g.Key.Taetigkeit1, 
       time = g.Sum(y => y.Zeit)
  });

Source: entityframework.net

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