VB實現的遞歸複製文件和搜索文件的代碼分享

這篇文章主要介紹了VB實現的遞歸複製文件和搜索文件的代碼分享,代碼寫的比較簡單,容易看懂,需要的朋友可以參考下

在程序中要做一個複製文件夾的功能，用遞歸寫起來很方便。後來要某位仁兄（自己知道就行了 - -）實現一個類似的，貌似不是那麼順利，這裏把複製文件夾的遞歸代碼丟出來：

Public Shared Sub CopyDirectory(source As String, destination As String)
  If Directory.Exists(destination) = False Then
    Try
      Directory.CreateDirectory(destination)
    Catch ex As Exception
      Logger.LogError(Logger.SourceType.Application, "Copy build process: Cannot create folder: " & destination)
      Return
    End Try
  End If
  
  For Each paths As String In Directory.GetDirectories(source)
    CopyDirectory(paths, Path.Combine(destination, paths.Substring(paths.LastIndexOfAny({""c, "/"c}) + 1)))
  Next
  
  For Each files As String In Directory.GetFiles(source)
    Try
      File.Copy(files, Path.Combine(destination, files.Substring(files.LastIndexOfAny({""c, "/"c}) + 1)), True)
      _copiedFiles += 1
    Catch ex As Exception
      Logger.LogError(Logger.SourceType.Application, "Copy build process: Cannot copy file: " & files)
    End Try
  Next
  
End Sub

遞歸的程序實在是很簡潔很漂亮吧？後來又寫了一個在文件夾中搜索文件的方法，也是遞歸的，那麼在這裏就一併丟出來：

''' <summary>
''' Search the specified file in the folder and its sub folders and return its full path name. Empty string if not found.
''' </summary>
''' <param name="fileName">The file to search (no folder).</param>
''' <remarks></remarks>
Public Shared Function SearchFile(folder As String, fileName As String) As String
  If Directory.Exists(folder) = False Then Return String.Empty
  
  fileName = fileName.Trim.ToLower
  
  If fileName.IndexOfAny({""c, "/"c}) >= 0 Then
    fileName = GetFileName(fileName)
  End If
  
  Dim list() As String = Directory.GetFiles(folder)
  
  For i As Integer = 0 To list.GetUpperBound(0)
    If GetFileName(list(i)).Trim.ToLower = fileName Then Return list(i)
  Next
  
  Dim directories() As String = Directory.GetDirectories(folder)
  
  For i As Integer = 0 To directories.GetUpperBound(0)
    Dim return_file As String = SearchFile(directories(i), fileName)
  
    If return_file.Length > 0 Then Return return_file
  Next
  
  Return String.Empty
End Function

　　GetFileName是我自己寫的一個把路徑去掉只剩下文件名和擴展名的方法。

　　這兩段代碼實在是太簡單了，所以我覺得沒有什麼地方要解釋了（其實是準備下班走人了）。