Returns the length of a file in bytes.
Len (Text As String)
Text: Any string expression that contains an unambiguous file specification. You can also use URL notation.
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.
Sub ExampleFileLen MsgBox FileLen("C:\autoexec.bat") End Sub