LibreOffice 25.8 Help
傳回開啟檔案的大小,以位元組為單位。
Lof (FileNumber) As Long
Long
FileNumber: Any numeric expression that contains the file number that is specified in the Open statement.
To obtain the length of a file that is not open, use the FileLen function.
5 無效的程序呼叫
52 錯誤的檔案名稱或檔案編號
  Sub ExampleRandomAccess
      Dim iNumber As Integer
      Dim sText As Variant REM 必須是變體型變數
      Dim aFile As String
      aFile = "C:\Users\ThisUser\data.txt"
      iNumber = Freefile
      Open aFile For Random As #iNumber Len=32
      Seek #iNumber,1 REM 指定開始位置
      Put #iNumber, , "This is the first line of text" ' Fill line with text
      Put #iNumber, , "This is the second line of text"
      Put #iNumber, , "This is the third line of text"
      Seek #iNumber,2
      Get #iNumber, , sText
      Print sText
      Close #iNumber
      iNumber = Freefile
      Open aFile For Random As #iNumber Len=32
      Get #iNumber, 2, sText
      Put #iNumber, , "This is a new text"
      Get #iNumber, 1, sText
      Get #iNumber, 2, sText
      Put #iNumber, 20, "This is the text in record 20"
      Print Lof(#iNumber)
      Close #iNumber
  End Sub
  
  Sub ExampleRandomAccess
      Dim iNumber As Integer
      Dim sText As Variant ' Must be a variant
      Dim aFile As String
      aFile = "~/data.txt"
      iNumber = Freefile
      Open aFile For Random As #iNumber Len=32
      Seek #iNumber,1 ' Position at beginning
      Put #iNumber, , "This is the first line of text" ' Fill line with text
      Put #iNumber, , "This is the second line of text"
      Put #iNumber, , "This is the third line of text"
      Seek #iNumber,2
      Get #iNumber, , sText
      Print sText
      Close #iNumber
      iNumber = Freefile
      Open aFile For Random As #iNumber Len=32
      Get #iNumber, 2, sText
      Put #iNumber, , "This is a new text"
      Get #iNumber, 1, sText
      Get #iNumber, 2, sText
      Put #iNumber, 20, "This is the text in record 20"
      Print Lof(#iNumber)
      Close #iNumber
  End Sub