c# - C# 按文件名列出和排序 URL

Question

我想做这个：

anywhere.com/file/mybirthday.avi
anywhere.com/file/yourbirthday.avi
somewhere.com/file/mybirthday.avi
somewhere.com/file/yourbirthday.avi

对此：

anywhere.com/file/mybirthday.avi
somewhere.com/file/mybirthday.avi
##############
anywhere.com/file/yourbirthday.avi
somewhere.com/file/yourbirthday.avi

我找到了带有正则表达式的文件名。我对它们进行了分类。所以我的代码在这里：

private void button1_Click(object sender, EventArgs e)
{
    string gelenler = textBox2.Text;
    gelenler = gelenler.Replace("\r\n\r\n", "\r\n");
    string cikti = string.Empty;
    string regex = @"([^\/\\]+\.\w+)$";
    string[] parca = Regex.Split(gelenler, "\r\n");
    string[] parca2 = new string[parca.Length];
    for (int i = 0; i < parca.Length; i++)
    {
        string ad = match(regex, parca[i]);
        parca2[i] = ad;
     }
     Array.Sort(parca2);

     for (int j = 0; j < parca2.Length; j++)
     {
         for (int i = 0; i < parca2.Length; i++)
         {
            if (parca2[i].IndexOf(match(regex,parca[j]))!=-1)
            {
               textBox1.Text += parca[i] + Environment.NewLine;
               parca[i] = "";
             }
             textBox1.Text += "#############" + Environment.NewLine;
          }

      }
}

private string match(string regex, string html, int i = 1)
{
     return new Regex(regex, RegexOptions.Multiline).Match(html).Groups[i].Value.Trim();
}

但没有工作。有任何想法吗 ？

//对不起我的英语

Answer 1

我认为最好的主意总是使用现有的 .net 框架的东西，在这种情况下Path.GetFileName：

        var strings = new[]
                      {
                          "anywhere.com/file/mybirthday.avi",
                          "anywhere.com/file/yourbirthday.avi",
                          "somewhere.com/file/mybirthday.avi",
                          "somewhere.com/file/yourbirthday.avi"
                      };

        strings = strings.OrderBy(x => Path.GetFileName(x)).ToArray();

        foreach (var s in strings)
        {
            Console.WriteLine(s);                
        }

        Console.ReadKey();

Answer 2

您应该使用 Uri 类。使用 Segements 属性来获取文件名（它将是最后一个段）。

var uris = new[]
{
   new Uri("http://anywhere.com/file/mybirthday.avi"),
   new Uri("http://anywhere.com/file/yourbirthday.avi"),
   new Uri("http://somewhere.com/file/mybirthday.avi"),
   new Uri("http://somewhere.com/file/yourbirthday.avi")
};

var filename = uris.OrderBy(x => x.Segments[x.Segments.Length - 1]).ToArray();
foreach (var f in filename)
{
   Console.WriteLine(f);
}

Answer 3

我认为您的意思是对文件进行分组；在这种情况下，可以使用以下代码：

        IEnumerable<IGrouping<string, string>> groups = strings.GroupBy(x => Path.GetFileName(x)).OrderBy(g => g.Key);
        foreach (var group in groups)
        {
            foreach (var str in group)
            {
                Console.WriteLine(str);
            }
            Console.WriteLine("#############");
        }