英文单词排序

想记些单词，在记事本里，乱的。 今早花了一个多小时写了个文本排

  1 using System;
  2 using System.Collections.Generic;
  3 using System.Linq;
  4 using System.Text;
  5 using System.Windows;
  6 using System.Windows.Controls;
  7 using System.Windows.Data;
  8 using System.Windows.Documents;
  9 using System.Windows.Input;
 10 using System.Windows.Media;
 11 using System.Windows.Media.Imaging;
 12 using System.Windows.Navigation;
 13 using System.Windows.Shapes;
 14 using System.IO;
 15 using Microsoft.Win32;
 16 
 17 namespace WordsSort
 18 {
 19     /// <summary>
 20     /// MainWindow.xaml 的交互逻辑
 21     /// </summary>
 22     public partial class MainWindow : Window
 23     {
 24         public MainWindow()
 25         {
 26             InitializeComponent();
 27         }
 28 
 29         private void btnOpen_Click(object sender, RoutedEventArgs e)
 30         {
 31             OpenFileDialog openFileDialog = new OpenFileDialog();
 32             openFileDialog.Filter = "Text Files|*.txt";
 33             openFileDialog.Title = "打开文件";
 34             if (openFileDialog.ShowDialog() == true)
 35             {
 36                 if (File.Exists(openFileDialog.FileName))
 37                 {
 38                    Cursor oldCursor = this.Cursor;
 39                     try
 40                     {
 41                         List<string> wordsList = new List<string>();
 42                         using (StreamReader sr = new StreamReader(openFileDialog.FileName, System.Text.Encoding.Default))
 43                         {
 44                             string line;
 45                             while ((line = sr.ReadLine()) != null)
 46                             {
 47                                 if (!string.IsNullOrEmpty(line))
 48                                 {

 50                                     wordsList.Add(line);
 51                                 }
 52                             }
 53                         }
 54                         this.Cursor = Cursors.Wait;
 55                         WriteWords(wordsList, openFileDialog.FileName);
 56 
 57                     }
 58                     catch (Exception ex)
 59                     {
 60                         throw (ex);
 61                     }
 62                     finally
 63                     {
 64                         this.Cursor = oldCursor;
 65                     }
 66 
 67                 }
 68 
 69             }
 70         }
 71 
 72         /// <summary>
 73         /// 写排序文件
 74         /// </summary>
 75         /// <param name="wordsList">单词列表</param>
 76         /// <param name="oldFileName">旧文件名</param>
 77         private void WriteWords(List<string> wordsList, string oldFileName)
 78         {
 79             int index = oldFileName.LastIndexOf('.');
 80             string newFileName = oldFileName.Remove(index) + "排序.txt";
 81             if (File.Exists(newFileName))
 82             {
 83                 File.Delete(newFileName);
 84             }
 85             wordsList.Sort();
 86             FileStream fs = new FileStream(newFileName, FileMode.Append, FileAccess.Write);
 87             string firstString = "";
 88             foreach (string word in wordsList)
 89             {
 90                 if (!string.Equals(word[0].ToString(), firstString,StringComparison.OrdinalIgnoreCase))
 91                 {
 92                     fs.Write(Encoding.Default.GetBytes("\r\n"), 0, 2);
 93                     firstString = word[0].ToString();
 94                 }
 95 
 96                 fs.Write(Encoding.Default.GetBytes(word + "\r\n"), 0, Encoding.Default.GetByteCount(word) + 2);
 97 
 98             }
 99             fs.Close();
100         }
101 
102 
103     }
104 }

序的。