如何创建2个循环？

Question

I have a csv file with NetworkID and NewFileName field. and I have bunch of files on a fileshare. The file name under the file share named after domain_networkid_Lthumb.jpg.

The idea is read each line from csv then find the file using contains (i guess). If a file is found that at least contains networkid_lthumb then rename this file to NewFileName.jpg.

What is the best way to do this? I have following code. and I just want to make it's efficient.

# Renames file based on CSV
$csvFile = Import-csv 'c:\userdata.csv'
$files = Get-ChildItem "c:\eePics\"
foreach($user in $csvFile)
{
    $account = $user.networkid
    $keyword = $account + "_LThumb" 
    $file = Get-Content $files.FullName
    $ContainsWord = $file | %{$_ -match $keyword}   
    if($ContainsWord -contains $true)
    {       
        Rename-Item $_.name -NewName $user.NewFileName
    }
}

Answer 1

If i understood correctly what you are trying to achieve this should work:

$csvFile = Import-csv "C:\userdata.csv"
$filePath = "C:\eepics\"
$destination = "C:\example\folder\"

foreach($user in $csvFile){
$filename = $user.networkid + "_LThumb"
Get-Childitem $filePath | where {$_.Name -match $filename} | Rename-Item -NewName $user.NewFileName
Copy-Item $filePath$($user.NewFileName) -Destination $destination
}

Note that the NewFileName in your csv has to contain the File-Extension (eg ".jpg")

-contains is used to test if a set (for example an array) contains a value. boolean comparisons like you are trying to do in your if statement should be done like this:

if($variable){}

If $variable is True the block will be executed

Regarding your code:

$file = Get-Content $files.FullName

will actually get the content (and if i say content i mean it) of all files in the directory C:\\eepics\\

$ContainsWord = $file | %{$_ -match $keyword}  

will cycle through all contents of all files you got line by line and see if something matches $keyword

Update: added code to copy the file after renaming because of user request