Powershell: Converting a String to an Integer

In creating a Powershell script to create a Microsoft Word document from CSV data I came across a little problem. In this snippet of code (the $patientAge and $patientName variables are populated with data from the CSV file) I want to highlight a patient’s name in yellow if they’re a minor:

If ($patientAge -lt 18)
$objSelection.font.Shading.BackgroundPatternColor = 65535

And it works fine if the patient age is two digits or less. But, if a patient age is 100 or higher – three digits, in other words – it would trigger as if they were a minor.

The fix was to convert the variable I’m using for the patient age into an integer and run the logic against it instead:

If ($patientAgeInt -lt 18)
$objSelection.font.Shading.BackgroundPatternColor = 65535

Boom, problem solved.

Powershell: Convert Word documents to PDF

# This script uses Microsoft Word to convert all .doc and .docx files
# within a folder to PDF files.
# Note 1: Word runs invisibly in the background while the script is running.
# Note 2: This script will not overwrite existing PDF files.

# Set the folder where the .doc and .docx files are
$folder = 'c:\path\to\folder\'

# Create an instance of Word
$word = New-Object -ComObject Word.Application

# Find all .doc and .docx files in $folder and
# loop through them, saving them as PDF files.
Get-ChildItem -Path $folder -Filter *.doc? | ForEach-Object {

# Open the doc? file
$file = $word.Documents.Open($_.FullName)

# Change the file extension to .pdf
$pdf = "$($_.DirectoryName)\$($_.BaseName).pdf"

# Save and close the file
# If a PDF file with this name already exists it will NOT be overwritten.
$file.SaveAs([ref] $pdf, [ref] 17)

# Exit Word