Example from -
http://codealoud.blogspot.com/2011/12/downloading-files-with-powershell.html
Just change the actions to write to a log file rather than show a
display/write-host and you should be all set.
function getfile($url, $filename)
{
$wc = New-Object System.Net.WebClient
Register-ObjectEvent -InputObject $wc -EventName DownloadProgressChanged
-SourceIdentifier WebClient.DownloadProgressChanged -Action { Write-Progress
-Activity "Downloading: $($EventArgs.ProgressPercentage)% Completed" -Status
$url -PercentComplete $EventArgs.ProgressPercentage; }
Register-ObjectEvent -InputObject $wc -EventName DownloadFileCompleted
-SourceIdentifier WebClient.DownloadFileComplete -Action { Write-Host "Download
Complete - $filename"; Unregister-Event -SourceIdentifier
WebClient.DownloadProgressChanged; Unregister-Event -SourceIdentifier
WebClient.DownloadFileComplete; }
try
{
$wc.DownloadFileAsync($url, $filename)
}
catch [System.Net.WebException]
{
Write-Host("Cannot download $url")
}
finally
{
$wc.Dispose()
}
}
$file1 = "URL"
$dir1 = "\\Share\Folder"
$file2 = "URL2"
$dir2 = "\\Share\Folder2"
getfile $file1 $dir1
getfile $file2 $dir2
From: [email protected] [mailto:[email protected]] On
Behalf Of Kelley, Matthew
Sent: Friday, May 30, 2014 11:21 AM
To: '[email protected]'
Subject: [powershell] RE: Logging Question
It looks like there is no return or confirmation from DownloadFile. You will
have to use DownloadFileAsync and watch for the DownloadFileCompleted event to
fire.
Here is a post giving some examples of how to implement system.net.webclient
with powershell:
http://stackoverflow.com/questions/4926060/powershell-runspace-problem-with-downloadfileasync
hope that helps!
Matt
From: [email protected]<mailto:[email protected]>
[mailto:[email protected]] On Behalf Of Orlebeck, Geoffrey
Sent: Friday, May 30, 2014 10:35 AM
To: [email protected]<mailto:[email protected]>
Subject: [powershell] Logging Question
Hello Group
I'm pretty new to PowerShell, and while I have figured out logging in most
situations, I'm trying to log a web download success/failure when using
"New-Object System.Net.WebClient DownloadFile". Is this possible? I've been
able to get output files created, but they are always blank. Like I said, I'm
pretty new to PowerShell so just a little help would be greatly appreciated.
I'm attempting to download multiple files, but the gist of the script looks
like this:
---------------------------------
$file1 = "URL"
$dir1 = "\\Share\Folder<file:///\\Share\Folder>"
$file2 = "URL2"
$dir2 = "\\Share\Folder2<file:///\\Share\Folder2>"
$wc = New-Object System.Net.WebClient
$wc.DownloadFile($file1, $dir1)
$wc.DownloadFile($file2, $dir2)
--------------------------------
I wasn't sure if it has to do with using objects on the command (don't think
that makes a difference). I've tried out-file, start-transcript, verbose in
various attempts but each command has resulted in the same blank text file.
Just wondering if there is a better way. The goal is to get basic "file
downloaded success" and the path it downloaded to, just so we can confirm
if/when review is necessary. The script works to grab the files and place them
in the appropriate folders, just want log output so other people can see it,
too.
Thanks.
-Geoff
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