Generate a pdf from powershell-CodePudding

I'm trying to generate a PDF with powershell but I don't know how to proceed. I already tried to use Itext 7 but I don't know how to make it work.

When i try to install Itext7 on powershell i have this error message :

No match found for the specified search criteria and the itext7 package name. Use 
Get-PackageSource to display for all available registered package sources.

Could I have some help?

Thanks in advance

CodePudding user response：

Below is the code for a PowerShell Script which outputs a PDF with "Hello World!" written on it. It mirrors the functionality of iText 7 basic Hello World example. You can change it as per your requirement.

Add-Type -Path "C:\temp\Common.Logging.Core.dll"
Add-Type -Path "C:\temp\Common.Logging.dll"
Add-Type -Path "C:\temp\BouncyCastle.Crypto.dll"
Add-Type -Path "C:\temp\itext.io.dll"
Add-Type -Path "C:\temp\itext.layout.dll"
Add-Type -Path "C:\temp\itext.kernel.dll"

[string] $DEST = "C:\files\HelloWorldPowerShell.pdf"
$pdfWriter = [iText.Kernel.Pdf.PdfWriter]::new($DEST)
$pdf = [iText.Kernel.Pdf.PdfDocument]::new($pdfWriter)
$document = [iText.Layout.Document]::new($pdf)
$document.Add([iText.Layout.Element.Paragraph]::new("Hello World!"))
$pdf.Close()

CodePudding user response：

The combination of PowerShell dependencies can be problematic as they need to be of a known working group in time (you can try to update later, after testing), and run as Admin perhaps different to a normal user. So follow these steps carefully as some may downgrade your current settings.

MOST IMPORTANT use a project directory and watch that your prompt is located in that folder to ensure you are not running in the default PowerShell directory. I use a shortcut where the target directory is "blank/empty" thus defaults to the current working folder.

1st Check:-

project folder>[Net.ServicePointManager]::SecurityProtocol

should return either Tls12 or Tls13 we need it to be 1.2 so keep a note if yours is set to Tls13 and run this line.

 [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12

we may need to possibly change package provider so first check if nuget includes

Note the order and location of the script is critical for correct loading

    Add-Type -Path (Join-Path $PSScriptRoot ".\Common.Logging.Core.3.4.1\lib\net40\Common.Logging.Core.dll")
    Add-Type -Path (Join-Path $PSScriptRoot ".\Common.Logging.3.4.1\lib\net40\Common.Logging.dll")
    Add-Type -Path (Join-Path $PSScriptRoot ".\Portable.BouncyCastle.1.8.9\lib\net40\BouncyCastle.Crypto.dll")
    Add-Type -Path (Join-Path $PSScriptRoot ".\itext7.7.1.14\lib\net40\itext.io.dll")
    Add-Type -Path (Join-Path $PSScriptRoot ".\itext7.7.1.14\lib\net40\itext.layout.dll")
    Add-Type -Path (Join-Path $PSScriptRoot ".\itext7.7.1.14\lib\net40\itext.kernel.dll")

    $pdfDocuFilename = (join-path $PSScriptRoot "My1st.pdf")
    $pdfWriter = [iText.Kernel.Pdf.PdfWriter]::new($pdfDocuFilename)
    $pdfdocument = [iText.Kernel.Pdf.PdfDocument]::new($pdfWriter)
    $pdfdocument.AddNewPage()

    $pdfdocument.Close()

This will produce an empty file but proves all is well, and you can start running other examples. Good Luck.