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# FileLen Function

傳回檔案長度，以位元組為單位。

### Syntax:

    FileLen (Text As String) As Long

### Return value:

Long

Use ScriptForge.FileSystem service GetFileLen() method when size is expected to be over 2 gigabytes.

### Parameters:

Text：包含明確檔案規格的任意字串型表示式。您也可以使用 URL 表示法。

This function determines the length of a file. If the FileLen function is called for an open file, it returns the file length before it was opened. To determine the current file length of an open file, use the Lof function.

### 錯誤代碼：

5 無效的程序呼叫

### Example:

    Sub ExampleFileLen
        MsgBox FileLen("C:\autoexec.bat")
    End Sub