Need help in finding complete string from a CSV file

Hi,

I have got one CSV file, which has 2 columns old_name and new_name. Then I have many XML files in which I want to find the old_name and replace with the new_name from the CSV file.

E.g. In CSV file I have data as follows in the same order:

old_name                             new_name

VENDR_TAB                          VRTB

VENDR_TAB_ADDR               VRTBAR

Using this data I want to search old_name in XML file and replace with the new_name.

But the problem is since my first string is VENDR_TAB and its new name is VRTB, the moment it finds that string it replaces with new name. So VENDR_TAB_ADDR also becomes VRTB_ADDR, which is not what I want.

The script should search for the whole string and replace with the new ones. So the output for VENDR_TAB_ADDR should be VRTBAR and VENDR_TAB should be VRTB.

The script written by me is as follows:

$csv = Import-Csv D:\Temp\ast_dim.csv

$xmlfiles = Get-ChildItem D:\Temp\*.xml

foreach ($line in $csv)

{

foreach ($file in $xmlfiles)

{

#Write-Host $file  

(gc $file) -replace $line.old_name, $line.new_name | Out-File $file -Encoding "ASCII"

}

}

Thanks In advance.