#csharp #linq

LINQ supports multiple fields in OrderBy, just like SQL's ORDER BY A DESC, B ASC.

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### Example: Equivalent of ORDER BY A DESC, B ASC in LINQ

var sorted = data
    .OrderByDescending(x => x.A)
    .ThenBy(x => x.B);

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### Explanation:

- OrderBy / OrderByDescending sets the primary sort.
- ThenBy / ThenByDescending adds secondary, tertiary, etc., sorts.

Each ThenBy applies only if the previous key values are equal—just like in SQL.