Steven Giesel • 9/6/2021

IEnumerable vs IQueryable - What's the difference

This technical article details the conceptual and practical differences between IEnumerable and IQueryable in C#. It explains how IEnumerable is for in-memory collections, executing filters client-side, while IQueryable uses expression trees to translate queries (e.g., to SQL) for server-side execution, impacting performance significantly when querying databases.

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#c #linq #Ienumerable