Hi @SorenB
earliestDate = dt.AsEnumerable() _
.Select(Function(row) DateTime.ParseExact(row("Dates").ToString(), "dd-MM-yyyy", System.Globalization.CultureInfo.InvariantCulture)) _
.Min().ToString("dd-MM-yyyy")
latestDate = dt.AsEnumerable() _
.Select(Function(row) DateTime.ParseExact(row("Dates").ToString(), "dd-MM-yyyy", System.Globalization.CultureInfo.InvariantCulture)) _
.Max().ToString("dd-MM-yyyy")
Regards,