Как выбрать конкретный столбец в excel с помощью pandas [duplicate]

вы можете использовать IComparable

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
              List<string> data = new List<string>{
                "3.5.0.1", "3.4.1.9", "3.4.1.56", "3.4.1.55", "3.4.1.46",
                "3.4.1.45", "3.4.1.44", "3.4.1.30", "3.4.1.3", "3.4.1.22",
                "3.4.1.2", "3.4.1.11", "3.4.1.0", "3.4.0.7", "3.4.0.3",
                "3.4.0.1", "3.3.0.8", "3.3.0.4", "3.3.0.0", "3.2.0.9",
                "3.2.0.6", "3.2.0.3", "3.2.0.27", "3.2.0.20", "3.2.0.15",
                "3.2.0.1", "3.2.0.0", "3.1.0.7", "3.1.0.15", "3.1.0.14"
              };
              List<SortPara> sortPara = data.Select(x => new SortPara(x)).ToList();
              data = sortPara.OrderBy(x => x).Select(x => x.strNumbers).ToList();
              data = sortPara.OrderByDescending(x => x).Select(x => x.strNumbers).ToList();
        }

    }
    public class SortPara : IComparable<SortPara>
    {
        public List<int> numbers { get; set; }
        public string strNumbers { get; set; }
        public SortPara(string strNumbers)
        {
            this.strNumbers = strNumbers;
            numbers = strNumbers.Split(new char[] { '.' }).Select(x => int.Parse(x)).ToList();

        }
        public int CompareTo(SortPara other)
        {
            int shortest = this.numbers.Count < other.numbers.Count ? this.numbers.Count : other.numbers.Count;
            int results = 0;
            for (int i = 0; i < shortest; i++)
            {
                if (this.numbers[i] != other.numbers[i])
                {
                    results = this.numbers[i].CompareTo(other.numbers[i]);
                    break;
                }
            }
            return results;
        }
    }
}