在Windows批处理编程中读取文件名

我想在Windows批处理编程中读取文件名.我正在尝试使用其他方法，但失败了，请帮助.

I want to read the name of a file in windows batch programming. I am trying by using different methods but failed please help.

场景已在下面给出.

我在一个文件夹中有不同的文件，但所有文件的文件名长度都相同. 例如

I have different files in a folder but the length for filename is same for all files. E.g.

1000342578_30062011.PDF
1000342329_30062011.PDF

我只想将_之后和.PDF(例如30062011)部分之前的部分保存在变量中.

And I just want to save the part after _ and before .PDF (e.g. 30062011) part in a variable.

下面只是尝试，但我无法通过.

Below are just tries but I am not able to get through.

@echo off
echo.Date   : %date%
echo.Year   : %date:~10,4%
dir /s /b C:\Users\zeeshando\Desktop\*.txt
for %%x in (c:\temp\*.xls) do echo %%x 
lfnfor off 
for %%x in (*.*) do echo %%x > filelist.txt 
PAUSE
for %i in (C:\Users\zeeshando\Desktop) do 
    echo %~ni
PAUSE

更新

我当前的代码，基于@Alex K.的答案:

My current code, based on @Alex K.'s answer:

@setlocal enabledelayedexpansion
for %%x in (C:\Hi\*.*) do (
    set fn=%%x
    set fn=!fn:~22,8!
    echo !fn!
    call:handler
)
goto:eof

:handler
echo !fn!
copy C:\Hi\*.* E:\!fn!
goto:eof


PAUSE

但是它没有复制文件.请检查上面的代码.

But it is not copying the files. Please check the above code.