Wie ein Array von Fileinfo sortieren []

Question

ich den folgenden Code

DirectoryInfo taskDirectory = new DirectoryInfo(this.taskDirectoryPath); 
FileInfo[] taskFiles = taskDirectory.GetFiles("*" + blah + "*.xml"); 

Ich möchte sortieren Sie die Liste nach Dateinamen haben.

Wie erfolgt dies, so schnell und einfach wie möglich mit .net v2.

Answer 1

Anruf Array.Sort, in einem Vergleich Delegierten vorbei:

Array.Sort(taskFiles, delegate(FileInfo f1, FileInfo f2) { 
    return f1.Name.CompareTo(f2.Name); 
}); 

In C# 3 wird dies etwas einfacher:

Array.Sort(taskFiles, (f1, f2) => f1.Name.CompareTo(f2.Name)); 

Oder können Sie eine StringComparer verwenden, wenn Sie eine verwenden möchten Groß- und Kleinschreibung Sortierreihenfolge:

Array.Sort(taskFiles, 
      (x, y) => StringComparer.OrdinalIgnoreCase.Compare(x.Name, y.Name)); 

(oder string.Compare(x.Name, y.Name, true), oder eine der vielen anderen Möglichkeiten zu vergleichen Strings :)

Answer 2

Comparison<FileInfo> comparison = new Comparison<FileInfo>(delegate(FileInfo a, FileInfo b) 
{ 
    return String.Compare(a.Name, b.Name); 
}); 

Array.Sort(taskFiles, comparison); 

Aber trotzdem denke ich, das Ergebnis GetFiles bereits nach Namen sortiert wird ...

Answer 3

Array.Sort(taskFiles, delegate (FileInfo x, FileInfo y) { 
    return string.Compare(x.Name,y.Name); 
}); 

Answer 4

public class FileComparer : IComparer 
     { 
      public enum CompareBy 
      { 
       Name /* a-z */, 
       LastWriteTime /* oldest to newest */, 
       CreationTime /* oldest to newest */, 
       LastAccessTime /* oldest to newest */, 
       FileSize /* smallest first */, 

      } 
      // default comparison 
      int _CompareBy = (int)CompareBy.Name; 
      public FileComparer() 
      { 
      } 

      public FileComparer(CompareBy compareBy) 
      { 
       _CompareBy = (int)compareBy; 
      } 
      int IComparer.Compare(object x, object y) 
      { 
       int output = 0; 
       DirectoryInfo file1 = new DirectoryInfo(x.ToString()); 
       DirectoryInfo file2 = new DirectoryInfo(y.ToString()); 
       switch(_CompareBy) 
       { 
        case (int)CompareBy.LastWriteTime: 
         output = DateTime.Compare(file1.LastWriteTime, file2.LastWriteTime); 
         break; 
        case (int)CompareBy.CreationTime: 
         output = DateTime.Compare(file1.CreationTime, file2.CreationTime); 
         break; 
        case (int)CompareBy.LastAccessTime: 
         output = DateTime.Compare(file1.LastAccessTime, file2.LastAccessTime); 
         break; 
    //    case (int)CompareBy.FileSize: 
    //     output = Convert.ToInt32(file1.Length - file2.Length); 
    //     break; 
        case (int)CompareBy.Name: 
        default: 
         output = (new CaseInsensitiveComparer()).Compare(file1.Name, file2.Name); 
         break; 
       } 
       return output; 
      } 
     } 

/////////////////////////////////// 
ArrayList list=new ArrayList();   
      string folder = @"D:\DVRData\ICICI\Transaction\21-Dec-08\08_51_23_2231"; 
      string[] files = Directory.GetFiles(folder);    
      IComparer comp = new FileComparer(FileComparer.CompareBy.CreationTime); 
      Array.Sort(files, comp); 
      foreach(string file in files) 
      { 
       list.Add(file); 
      }