VBA judge whether the file exists and ask for the idea of file backup

         When saving a file , You may encounter a file with the same file name that already exists . here , An exception will occur when saving again , When you want to save the current file , We need to determine whether the file exists . If the file exists, we will Kill(fileName) , Then save .

        If Dir(FileName) <> "" Then
            MsgBox (" File exists ")
            Kill (FileName)
        
        Else
            MsgBox (" file does not exist ")
        
        End If

        The above solutions , Faced with a problem , It is generally impossible to ensure the file Kill Is the missing file useful . here , You can change the file name （ original file name +Time） The way , Make a backup .