在本節描述的示例代碼,提供真實的例子來示範在 FileSystemObject 對象模式中可用的許多功能。該代碼顯示瞭如何一起使用對象模式的所有功能,以及如何在您自己的代碼中有效地使用這些功能。

請注意,由於該代碼是極一般的,所以要使該代碼能夠真正在您的機器上運行,可能需要一些其他代碼和小小的變更。這些改變之所以必要,是因為在 Active Server Pages 和 Windows Scripting Host 之間,為輸入和輸出給用户採用了不同的方法。

要在 Active Server Pages 上運行該代碼,則採取以下步驟:

創建一個標準的 Web 頁,後綴名為 .asp。
把下面的示例代碼複製到 <BODY>...</BODY> 標記之間的文件中。
把所有代碼封裝到 <%...%> 標記內。
把 Option Explicit 語句從當前位置移動到 HTML 頁的最頂部,甚至在 <HTML> 開始標記前。
把 <%...%> 標記放置在 Option Explicit 語句周圍,以保證它在服務器端運行。
把下面的代碼添加到示例代碼末尾:
Sub Print(x) Response.Write "<PRE><FONT face="宋體"" SIZE=""1"">" Response.Write x Response.Write "</FONT></PRE>" End Sub Main
前面的代碼增加一個將在服務器端運行,但在客户端顯示結果的打印過程。要在 Windows Scripting Host 上運行該代碼,則把下面的代碼添加到示例代碼的末尾:
Sub Print(x) WScript.Echo x End Sub Main
下面就是示例代碼:


以下為引用的內容:


--------------------------------------------------------------------------------

''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
'
' FileSystemObject 示例代碼
'
'Copyright 1998  Microsoft Corporation。保留所有權利。
'
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''

Option Explicit

''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
'


' 對於代碼質量:

'

' 1) 下面的代碼有許多字符串操作,用&quot;&amp;&quot;運算符來把短字符串連接在一起。由於

'    字符串連接是費時的,所以這是一種低效率的寫代碼方法。無論如何,它是

'    一種非常好維護的寫代碼方法,並且在這兒使用了這種方法,因為該程序執行

'    大量的磁盤操作,而磁盤操作比連接字符串所需的內存操作要慢得多。

'    記住這是示範代碼,而不是產品代碼。

'

' 2) 使用了 &quot;Option Explicit&quot;,因為訪問聲明過的變量,比訪問未聲明的變量要

'    稍微快一些。它還能阻止在代碼中發生錯誤,例如,把 DriveTypeCDROM 誤拼

'    成了 DriveTypeCDORM 。

'

' 3) 為了使代碼更可讀,該代碼中沒有錯誤處理。雖然採取了防範措施,來保證代碼

'    在普通情況下沒有錯誤,但文件系統是不可預知的。在產品代碼中,使用

'    On Error Resume Next 和 Err 對象來捕獲可能發生的錯誤。


以下為引用的內容:

' 
            ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            '
            ' 一些容易取得的全局變量
            '
            ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''Dim TabStop
            Dim NewLineConst TestDrive = "C"
            Const TestFilePath = "C:Test"''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            '
            ' 由 Drive.DriveType 返回的常數
            '
            ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''Const DriveTypeRemovable = 1
            Const DriveTypeFixed = 2
            Const DriveTypeNetwork = 3
            Const DriveTypeCDROM = 4
            Const DriveTypeRAMDisk = 5''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            '
            ' 由 File.Attributes 返回的常數
            '
            ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''Const FileAttrNormal  = 0
            Const FileAttrReadOnly = 1
            Const FileAttrHidden = 2
            Const FileAttrSystem = 4
            Const FileAttrVolume = 8
            Const FileAttrDirectory = 16
            Const FileAttrArchive = 32 
            Const FileAttrAlias = 64
            Const FileAttrCompressed = 128''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            '
            ' 用來打開文件的常數
            '
            ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''Const OpenFileForReading = 1 
            Const OpenFileForWriting = 2 
            Const OpenFileForAppending = 8 ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            '
            ' ShowDriveType
            '
            ' 目的: 
            '
            ' 生成一個字符串,來描述給定 Drive 對象的驅動器類型。
            '
            ' 示範下面的內容
            '
            ' - Drive.DriveType
            '
            ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''Function ShowDriveType(Drive)
 Dim S
              
             Select Case Drive.DriveType
             Case DriveTypeRemovable
              S = "Removable"
             Case DriveTypeFixed
              S = "Fixed"
             Case DriveTypeNetwork
              S = "Network"
             Case DriveTypeCDROM
              S = "CD-ROM"
             Case DriveTypeRAMDisk
              S = "RAM Disk"
             Case Else
              S = "Unknown"
             End Select ShowDriveType = S
End Function
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            '
            ' ShowFileAttr
            '
            ' 目的: 
            '
            ' 生成一個字符串,來描述文件或文件夾的屬性。
            '
            ' 示範下面的內容
            '
            ' - File.Attributes
            ' - Folder.Attributes
            '
            ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''Function ShowFileAttr(File) ' File 可以是文件或文件夾
 Dim S
               Dim Attr
             
             Attr = File.Attributes If Attr = 0 Then
              ShowFileAttr = "Normal"
              Exit Function
             End If If Attr And FileAttrDirectory  Then S = S & "Directory "
             If Attr And FileAttrReadOnly   Then S = S & "Read-Only "
             If Attr And FileAttrHidden     Then S = S & "Hidden "
             If Attr And FileAttrSystem     Then S = S & "System "
             If Attr And FileAttrVolume     Then S = S & "Volume "
             If Attr And FileAttrArchive    Then S = S & "Archive "
             If Attr And FileAttrAlias      Then S = S & "Alias "
             If Attr And FileAttrCompressed Then S = S & "Compressed " ShowFileAttr = S
End Function
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            '
            ' GenerateDriveInformation
            '
            ' 目的: 
            '
            ' 生成一個字符串,來描述可用驅動器的當前狀態。
            '
            ' 示範下面的內容
            '
            ' - FileSystemObject.Drives 
            ' - Iterating the Drives collection
            ' - Drives.Count
            ' - Drive.AvailableSpace
            ' - Drive.DriveLetter
            ' - Drive.DriveType
            ' - Drive.FileSystem
            ' - Drive.FreeSpace
            ' - Drive.IsReady
            ' - Drive.Path
            ' - Drive.SerialNumber
            ' - Drive.ShareName
            ' - Drive.TotalSize
            ' - Drive.VolumeName
            '
            ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''Function GenerateDriveInformation(FSO)
 Dim Drives
             Dim Drive
             Dim S Set Drives = FSO.Drives
 S = "Number of drives:" & TabStop & Drives.Count & NewLine & NewLine
 ' 構造報告的第一行。
             S = S & String(2, TabStop) & "Drive" 
             S = S & String(3, TabStop) & "File" 
             S = S & TabStop & "Total"
             S = S & TabStop & "Free"
             S = S & TabStop & "Available" 
             S = S & TabStop & "Serial" & NewLine ' 構造報告的第二行。
             S = S & "Letter"
             S = S & TabStop & "Path"
             S = S & TabStop & "Type"
             S = S & TabStop & "Ready?"
             S = S & TabStop & "Name"
             S = S & TabStop & "System"
             S = S & TabStop & "Space"
             S = S & TabStop & "Space"
             S = S & TabStop & "Space"
             S = S & TabStop & "Number" & NewLine  ' 分隔行。
             S = S & String(105, "-") & NewLine For Each Drive In Drives
  S = S & Drive.DriveLetter
              S = S & TabStop & Drive.Path
              S = S & TabStop & ShowDriveType(Drive)
              S = S & TabStop & Drive.IsReady  If Drive.IsReady Then
                  If DriveTypeNetwork = Drive.DriveType Then
                S = S & TabStop & Drive.ShareName 
               Else
                S = S & TabStop & Drive.VolumeName 
               End If       S = S & TabStop & Drive.FileSystem
               S = S & TabStop & Drive.TotalSize
               S = S & TabStop & Drive.FreeSpace
               S = S & TabStop & Drive.AvailableSpace
               S = S & TabStop & Hex(Drive.SerialNumber)  End If
  S = S & NewLine
 Next  
             
             GenerateDriveInformation = SEnd Function
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            '
            ' GenerateFileInformation
            '
            ' 目的: 
            '
            ' 生成一個字符串,來描述文件的當前狀態。
            '
            ' 示範下面的內容
            '
            ' - File.Path
            ' - File.Name
            ' - File.Type
            ' - File.DateCreated
            ' - File.DateLastAccessed
            ' - File.DateLastModified
            ' - File.Size
            ' 
            ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''Function GenerateFileInformation(File)
 Dim S
 S = NewLine & "Path:" & TabStop & File.Path
             S = S & NewLine & "Name:" & TabStop & File.Name
             S = S & NewLine & "Type:" & TabStop & File.Type
             S = S & NewLine & "Attribs:" & TabStop & ShowFileAttr(File)
             S = S & NewLine & "Created:" & TabStop & File.DateCreated
             S = S & NewLine & "Accessed:" & TabStop & File.DateLastAccessed
             S = S & NewLine & "Modified:" & TabStop & File.DateLastModified
             S = S & NewLine & "Size" & TabStop & File.Size & NewLine GenerateFileInformation = S
End Function
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            '
            ' GenerateFolderInformation
            '
            ' 目的: 
            '
            ' 生成一個字符串,來描述文件夾的當前狀態。
            '
            ' 示範下面的內容
            '
            ' - Folder.Path
            ' - Folder.Name
            ' - Folder.DateCreated
            ' - Folder.DateLastAccessed
            ' - Folder.DateLastModified
            ' - Folder.Size
            ' 
            ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            Function GenerateFolderInformation(Folder) Dim S
 S = "Path:" & TabStop & Folder.Path
             S = S & NewLine & "Name:" & TabStop & Folder.Name
             S = S & NewLine & "Attribs:" & TabStop & ShowFileAttr(Folder)
             S = S & NewLine & "Created:" & TabStop & Folder.DateCreated
             S = S & NewLine & "Accessed:" & TabStop & Folder.DateLastAccessed
             S = S & NewLine & "Modified:" & TabStop & Folder.DateLastModified
             S = S & NewLine & "Size:" & TabStop & Folder.Size & NewLine GenerateFolderInformation = S
End Function
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            '
            ' GenerateAllFolderInformation
            '
            ' 目的: 
            '
            ' 生成一個字符串,來描述一個文件夾和所有文件及子文件夾的當前狀態。
            '
            ' 示範下面的內容
            '
            ' - Folder.Path
            ' - Folder.SubFolders
            ' - Folders.Count
            ' 
            ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            Function GenerateAllFolderInformation(Folder) Dim S
             Dim SubFolders
             Dim SubFolder
             Dim Files
             Dim File S = "Folder:" & TabStop & Folder.Path & NewLine & NewLine
 Set Files = Folder.Files
 If 1 = Files.Count Then
              S = S & "There is 1 file" & NewLine
             Else
              S = S & "There are " & Files.Count & " files" & NewLine
             End If If Files.Count <> 0 Then
  For Each File In Files
               S = S & GenerateFileInformation(File)
              Next End If
 Set SubFolders = Folder.SubFolders
 If 1 = SubFolders.Count Then
              S = S & NewLine & "There is 1 sub folder" & NewLine & NewLine
             Else
              S = S & NewLine & "There are " & SubFolders.Count & " sub folders" & NewLine & NewLine
             End If If SubFolders.Count <> 0 Then
  For Each SubFolder In SubFolders
               S = S & GenerateFolderInformation(SubFolder)
              Next  S = S & NewLine
  For Each SubFolder In SubFolders
               S = S & GenerateAllFolderInformation(SubFolder)
              Next End If
 GenerateAllFolderInformation = S
End Function
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            '
            ' GenerateTestInformation
            '
            ' 目的: 
            '
            ' 生成一個字符串,來描述 C:Test 文件夾和所有文件及子文件夾的當前狀態。
            '
            ' 示範下面的內容
            '
            ' - FileSystemObject.DriveExists
            ' - FileSystemObject.FolderExists
            ' - FileSystemObject.GetFolder
            '
            ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            Function GenerateTestInformation(FSO) Dim TestFolder
             Dim S If Not FSO.DriveExists(TestDrive) Then Exit Function
             If Not FSO.FolderExists(TestFilePath) Then Exit Function Set TestFolder = FSO.GetFolder(TestFilePath)
 GenerateTestInformation = GenerateAllFolderInformation(TestFolder) 
End Function
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            '
            ' DeleteTestDirectory
            '
            ' 目的: 
            '
            ' 清理 test 目錄。
            '
            ' 示範下面的內容
            '
            ' - FileSystemObject.GetFolder
            ' - FileSystemObject.DeleteFile
            ' - FileSystemObject.DeleteFolder
            ' - Folder.Delete
            ' - File.Delete
            '
            ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            Sub DeleteTestDirectory(FSO) Dim TestFolder
             Dim SubFolder
             Dim File
             <a name="DeleteFile">
             ' 有兩種方法可用來刪除文件: FSO.DeleteFile(TestFilePath & "BeatlesOctopusGarden.txt")
 Set File = FSO.GetFile(TestFilePath & "BeatlesBathroomWindow.txt")
             File.Delete              ' 有兩種方法可用來刪除文件夾:
 FSO.DeleteFolder(TestFilePath & "Beatles")
 FSO.DeleteFile(TestFilePath & "ReadMe.txt")
 Set TestFolder = FSO.GetFolder(TestFilePath)
             TestFolder.DeleteEnd Sub
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            '
            ' CreateLyrics
            '
            ' 目的: 
            '
            ' 在文件夾中創建兩個文本文件。
            '
            '
            ' 示範下面的內容
            '
            ' - FileSystemObject.CreateTextFile
            ' - TextStream.WriteLine
            ' - TextStream.Write
            ' - TextStream.WriteBlankLines
            ' - TextStream.Close
            '
            ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            Sub CreateLyrics(Folder) Dim TextStream
             </a><a name="CreateTextFile">
             Set TextStream = Folder.CreateTextFile("OctopusGarden.txt")
             </a><a name="WriteToFile">
             TextStream.Write("Octopus' Garden ") ' 請注意,該語句不添加換行到文件中。
             TextStream.WriteLine("(by Ringo Starr)")
             TextStream.WriteBlankLines(1)
             TextStream.WriteLine("I'd like to be under the sea in an octopus' garden in the shade,")
             TextStream.WriteLine("He'd let us in, knows where we've been -- in his octopus' garden in the shade.")
             TextStream.WriteBlankLines(2)
             </a><a name="Close">
             TextStream.Close Set TextStream = Folder.CreateTextFile("BathroomWindow.txt")
             TextStream.WriteLine("She Came In Through The Bathroom Window (by Lennon/McCartney)")
             TextStream.WriteLine("")
             TextStream.WriteLine("She came in through the bathroom window protected by a silver spoon")
             TextStream.WriteLine("But now she sucks her thumb and wanders by the banks of her own lagoon")
             TextStream.WriteBlankLines(2)
             TextStream.CloseEnd Sub
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            '
            ' GetLyrics
            '
            ' 目的: 
            '
            ' 顯示 lyrics 文件的內容。
            '
            '
            ' 示範下面的內容
            '
            ' - FileSystemObject.OpenTextFile
            ' - FileSystemObject.GetFile
            ' - TextStream.ReadAll
            ' - TextStream.Close
            ' - File.OpenAsTextStream
            ' - TextStream.AtEndOfStream
            ' - TextStream.ReadLine
            '
            ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            Function GetLyrics(FSO) Dim TextStream
             Dim S
             Dim File ' 有多種方法可用來打開一個文本文件,和多種方法來從文件讀取數據。
             ' 這兒用了兩種方法來打開文件和讀取文件: Set TextStream = FSO.OpenTextFile(TestFilePath & "BeatlesOctopusGarden.txt", OpenFileForReading)
             </a><a name="ReadFromFile">
             S = TextStream.ReadAll & NewLine & NewLine
             TextStream.Close Set File = FSO.GetFile(TestFilePath & "BeatlesBathroomWindow.txt")
             Set TextStream = File.OpenAsTextStream(OpenFileForReading)
             Do  While Not TextStream.AtEndOfStream
              S = S & TextStream.ReadLine & NewLine
             Loop
             TextStream.Close GetLyrics = S
             
            End Function''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            '
            ' BuildTestDirectory
            '
            ' 目的: 
            '
            ' 創建一個目錄分層結構來示範 FileSystemObject。
            '
            ' 以這樣的次序來創建分層結構:
            '
            ' C:Test
            ' C:TestReadMe.txt
            ' C:TestBeatles
            ' C:TestBeatlesOctopusGarden.txt
            ' C:TestBeatlesBathroomWindow.txt
            '
            '
            ' 示範下面的內容
            '
            ' - FileSystemObject.DriveExists
            ' - FileSystemObject.FolderExists
            ' - FileSystemObject.CreateFolder
            ' - FileSystemObject.CreateTextFile
            ' - Folders.Add
            ' - Folder.CreateTextFile
            ' - TextStream.WriteLine
            ' - TextStream.Close
            '
            ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            </a><a name="FolderInfo">
            Function BuildTestDirectory(FSO)
             
             Dim TestFolder
             Dim SubFolders
             Dim SubFolder
             Dim TextStream ' 排除(a)驅動器不存在,或(b)要創建的目錄已經存在的情況。
 If Not FSO.DriveExists(TestDrive) Then
              BuildTestDirectory = False
              Exit Function
             End If If FSO.FolderExists(TestFilePath) Then
              BuildTestDirectory = False
              Exit Function
             End If Set TestFolder = FSO.CreateFolder(TestFilePath)
 Set TextStream = FSO.CreateTextFile(TestFilePath & "ReadMe.txt")
             TextStream.WriteLine("My song lyrics collection")
             TextStream.Close Set SubFolders = TestFolder.SubFolders
 Set SubFolder = SubFolders.Add("Beatles")
 CreateLyrics SubFolder 
 BuildTestDirectory = True
End Function
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
            '
            ' 主程序
            '
            ' 首先,它創建一個 test 目錄,以及一些子文件夾和文件。 
            ' 然後,它轉儲有關可用磁盤驅動器和 test 目錄的某些信息,
            ' 最後,清除 test 目錄及其所有內容。
            '
            ''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''Sub Main
 Dim FSO
 ' 設立全局變量。
             TabStop = Chr(9)
             NewLine = Chr(10)
             </a><a name="CreateFSO">
             Set FSO = CreateObject("Scripting.FileSystemObject") If Not BuildTestDirectory(FSO) Then 
              Print "Test directory already exists or cannot be created.  Cannot continue."
              Exit Sub
             End If
             
             Print GenerateDriveInformation(FSO) & NewLine & NewLine Print GenerateTestInformation(FSO) & NewLine & NewLine
 Print GetLyrics(FSO) & NewLine & NewLine
 DeleteTestDirectory(FSO)
             
            End Sub