Hi,
FYI, the expression will be as the following. (I added ignorecase option, too)
dt2.AsEnumerable.Where(Function(r) System.Text.RegularExpressions.Regex.IsMatch(r("Column1").ToString,"\b"+System.Text.RegularExpressions.Regex.Escape(strKeyword)+"\b",System.Text.RegularExpressions.RegexOptions.IgnoreCase)).CopyToDataTable
Regards,