VB完成的遞歸復制文件和搜刮文件的代碼分享。本站提示廣大學習愛好者:(VB完成的遞歸復制文件和搜刮文件的代碼分享)文章只能為提供參考,不一定能成為您想要的結果。以下是VB完成的遞歸復制文件和搜刮文件的代碼分享正文
在法式中要做一個復制文件夾的功效,用遞歸寫起來很便利。後來要某位仁兄(本身曉得就好了 - -)完成一個相似的,貌似不是那末順遂,這裡把復制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
遞歸的法式其實是很簡練很英俊吧?後來又寫了一個在文件夾中搜刮文件的辦法,也是遞歸的,那末在這裡就一並丟出來:
''' <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是我本身寫的一個把途徑去失落只剩下文件名和擴大名的辦法。
這兩段代碼其實是太簡略了,所以我認為沒有甚麼處所要說明了(實際上是預備上班走人了)。