How to code this powershell script?

Question

Referring to following code, I would like to know on why not able to download the zip file. If I download manually by placing URL into browser, file can be downloaded without any problem.

Does anyone have any suggestions?
Thanks in advance

$url = "https://www.hkex.com.hk/eng/stat/dmstat/dayrpt/dqe210401.zip"
    $file = "D:\Sample.zip"
    [Net.ServicePointManager]::SecurityProtocol = 'Tls12'
    Invoke-WebRequest $url -OutFile $file

    If ((Test-Path $file) -and (Get-Item $file).length -gt 5kb) {break}

    catch [System.Exception] {
        $httpStatus = $null
        $tryError = $_.Exception
        $urlIsValid = $false;
        Write-Host "There was an error downloading $file" 

    }

Answer 1

Hi @oemScript-8271 ,

this is working here:

# This is working in PowerShell 5.1.19041.868  
$url = "https://www.hkex.com.hk/eng/stat/dmstat/dayrpt/dqe210401.zip"  
$file = "Sample.zip"  
Invoke-WebRequest $url -OutFile $file # Download file  
# Verify file  
If ((Get-Item $file).length -gt 5kb) {  
    Write-Output "Filesize of $file is greater than 5kb"   
    }  
else {Write-Output "There was an error downloading $file"}  

Not sure if you posted the full script. The Catch in your script without a Try doesn't make sense or better should not work at all.
https://learn.microsoft.com/de-de/powershell/module/microsoft.powershell.core/about/about_try_catch_finally?view=powershell-7.1
Break will break out loops like foreach, for, while, do, switch or trap.
https://learn.microsoft.com/de-de/powershell/module/microsoft.powershell.core/about/about_break?view=powershell-7.1
I would recommend using Return to terminate a PowerShell script.
https://learn.microsoft.com/de-de/powershell/module/microsoft.powershell.core/about/about_return?view=powershell-7.1

----------

(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)

Regards
Andreas Baumgarten

Answer 2

Hi,

The try block is missing in your script. Please check to see if this works

$url = "https://www.hkex.com.hk/eng/stat/dmstat/dayrpt/dqe210401t.zip"  
$file = "D:\Sample.zip"  
try{    
    if ((Test-Path $file) -and (Get-Item $file).length -gt 5kb) {  
        write-host "$file already exists."  
    }  
    else  
    {  
        [Net.ServicePointManager]::SecurityProtocol = 'Tls12'  
        Invoke-WebRequest $url -OutFile $file -ErrorAction Stop  
        Write-Host "$file has been downloaded."  
    }  
}         
catch [System.Exception] {  
    $httpStatus = $null  
    $tryError = $_.Exception  
    $urlIsValid = $false;  
    Write-Host "There was an error downloading $file"   
}  

Best Regards,
Ian Xue

============================================

If the Answer is helpful, please click "Accept Answer" and upvote it.
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

Answer 3

Referring to following error image, I would like to know on what error is that, do I need to use the latest powershell?

Furthermore, I would like to confirm on running powershell command

1) .\TestData.psl (last char is lower cap "L")
2) .\TestData.ps1 (last char is "1" or One)

Do you have any suggestions?
Thanks, to everyone very much for any suggestions (^v^)

$url = "https://www.hkex.com.hk/eng/stat/dmstat/dayrpt/dqe210401.zip"  
$file = "D:\Sample.zip"  
try{    
    if ((Test-Path $file) -and (Get-Item $file).length -gt 5kb) {  
   write-host "$file already exists."  
    }  
    else  
    {  
   [Net.ServicePointManager]::SecurityProtocol = 'Tls12'  
   Invoke-WebRequest $url -OutFile $file -ErrorAction Stop  
   Write-Host "$file has been downloaded."  
    }  
}    
catch [System.Exception] {  
    $httpStatus = $null  
    $tryError = $_.Exception  
    $urlIsValid = $false;  
    Write-Host "There was an error downloading $file"   
}