如何将文本文件中不同类型的数字按降序排序到文本框？

Question

它应该让我从我的电脑中选择一个文本文件。这个文本文件中会有数字。这些数字将由“white-space”字符分隔（提示：确保您考虑了所有的 white-space 字符，否则您的程序可能会失败）。十进制数字的小数位将以逗号分隔。文本文件中的数字数量是不确定的。当我 select 文件并单击按钮时，我应该看到文本文件中的所有数字按从大到小的顺序排序。

示例文本文件的内容如下所示：

56   45 6 2 789
9 349   -87
11
4,34   -198,456
65
9,85      45
-1
99,456
877 56     34  4

我在 Visual Studio 2017 年工作。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.IO;

namespace TestUygulamasi {
    public partial class Form1 : Form {
        public Form1() {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e) //get file and paste to testbox
        {
            Stream myStream = null;
            OpenFileDialog openFileDialog1 = new OpenFileDialog();
            openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";
            openFileDialog1.FilterIndex = 2;
            openFileDialog1.RestoreDirectory = true;

            if (openFileDialog1.ShowDialog() == DialogResult.OK) {
                try {
                    if ((myStream = openFileDialog1.OpenFile()) != null) {
                        using (myStream) {
                            textBox1.Text = File.ReadAllText(openFileDialog1.FileName);
                        }
                    }
                } catch (Exception ex) {
                    MessageBox.Show("Error: File has not read. Error: " + ex.Message);
                }
            }
        }

        private void button2_Click(object sender, EventArgs e)//Sorting Button
        {
            string numbers = textBox1.Text;
            string[] arr;
            arr = numbers.Split(' ');
            Array.Sort(arr);

            string sorting = int.Parse(textBox2.Text);
            for (int i = 0; i < arr.Length; ++i) {
                sorting = sorting + arr[i] + "\n";
                //sorting = arr[i] + "\n";
            }

            textBox2.Text = Convert.ToString(sorting);
            //listBox1.Items.Add("\n" + sorting + "\n");
            //MessageBox.Show(sorting);
        }
    }
}

我无法对数字进行降序排列。

Answer 1

您可以为此目的使用 Linq。

var str = textBox1.Text;
var currentCulture = (CultureInfo)CultureInfo.InvariantCulture.Clone();
currentCulture.NumberFormat.NumberDecimalSeparator = ",";
currentCulture.NumberFormat.NumberGroupSeparator = ".";

var numbers = str.Split(new string[] { " ",Environment.NewLine },StringSplitOptions.RemoveEmptyEntries)
                     .Select(num=> decimal.Parse(num,currentCulture))
                     .OrderBy(num=>num);
textBox1.Text = string.Join(Environment.NewLine,numbers);

Answer 2

另一个答案是这样的。我没有写这段代码。编写代码的人已删除代码和 his/her 评论。为什么 he/she 做到了？我不知道。希望he/she再回答下这个问题。我是该网站的新手，所以我无法投票 his/her 答案。谢谢我失去的秘密英雄

        List<decimal> nums = new List<decimal>();
        for (int i = 0; i < textBox1.Lines.Count(); ++i)
        {
            string[] line = textBox1.Lines[i].Split(new char[] { ' ' },
                                                    StringSplitOptions.RemoveEmptyEntries);
            foreach (string s in line)
            {
                nums.Add(decimal.Parse(s, NumberStyles.Number, new CultureInfo("tr-TR")));
            }
        }

        foreach (decimal d in nums.OrderByDescending(x => x))
        {
            listBox1.Items.Add(d.ToString());
        }

如何将文本文件中不同类型的数字按降序排序到文本框？

How to sort different type numbers which with are in text file to textbox in descending?

c#

regex

sorting

winforms

system.io.file