问获取一个批处理文件，告诉我csv文件中有多少行

EN

    @Echo off
    Set _File=ExportDiffFile.csv
    Set /a _Lines=0
    For /f %%j in ('Find "" /v /c ^< %_File%') Do Set /a _Lines=%%j
    REM Echo %_File% has %_Lines% lines.

    if "%_Lines%"=="1"(
        Echo %_File% has no new lines.
        Echo 100.
        REM exit 100
    )
    else
    (
        Echo %_File% has %_Lines% new lines.
        Echo adding into the server.
        REM exit 0
    )