[Solved] how to set values in a 2d matrix [closed]

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Here’s the Linq approach using Enumerable.GroupBy:

List<string> strings = new List<string>() { "a", "b", "c", "d", "e", "f", "g", "h" };
var trios = strings
    .Select((s, i) => new { Str = s, Index = i })
    .GroupBy(x => x.Index / 3);
foreach(var trio in trios){
    var newRow = table.Rows.Add(); // your DataTable here
    newRow.ItemArray = trio.Select(x => x.Str).ToArray();
}

This approach works also if the list is not divisible by three.

solved how to set values in a 2d matrix [closed]