c# - SELECT GROUP BY in DataTable.Select(Expression)? - Stack Overflow

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Mon May 08 2023 18:12:44 GMT+0000 (Coordinated Universal Time)

Saved by @javicinhio #cs

dt = dt.AsEnumerable()
       .GroupBy(r => new {Col1 = r["Col1"], Col2 = r["Col2"]})
       .Select(g => g.OrderBy(r => r["PK"]).First())
       .CopyToDataTable();

https://stackoverflow.com/questions/19407387/how-do-i-use-select-group-by-in-datatable-selectexpression

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