如何在access vba for fixed imports规范中转换/重命名未知文件类型

Sub ConvertAndRenameUnknownFileType()
    Dim fso As Object
    Dim folderPath As String
    Dim folder As Object
    Dim file As Object
    Dim fileName As String
    Dim fileExtension As String
    Dim newFileName As String
    
    ' 设置文件夹路径
    folderPath = "C:\YourFolderPath"
    
    ' 创建FileSystemObject对象
    Set fso = CreateObject("Scripting.FileSystemObject")
    
    ' 获取文件夹对象
    Set folder = fso.GetFolder(folderPath)
    
    ' 遍历文件夹中的文件
    For Each file In folder.Files
        ' 获取文件名和扩展名
        fileName = fso.GetBaseName(file.Name)
        fileExtension = fso.GetExtensionName(file.Name)
        
        ' 判断文件类型是否未知
        If fileExtension = "" Then
            ' 进行转换/重命名操作
            newFileName = "NewFileName" ' 设置新文件名
            file.Name = newFileName & ".txt" ' 修改文件名及扩展名为txt
        End If
    Next file
    
    ' 释放对象
    Set file = Nothing
    Set folder = Nothing
    Set fso = Nothing
End Sub