windows批处理中的变量怎么用？

[DataChat.Club]

@echo off 

cd "C:\Program Files"

for /r  %%i in (*.exe) do (
echo %%i
wmic datafile where "Name=%%i" get Version
pause)

pause

我要把Program Files目录下的所有.exe文件的版本信息提取出来，

但第7行"Name=%%i"不对，应该是变量 %%i 的用法错了，怎么改？

[chuifengde]

@echo off 
setlocal enabledelayedexpansion

set s="C:\Program Files"
cd %s%
for /r %%i in (*.exe) do (
echo %%i
set n=%%i
set n=!n:\=\\!
wmic datafile where Name='!n!' get Version
pause)