How to Pass Function Parameters Between PowerShell Scripts for Remote Notifications

Learn how to effectively pass function parameters from one PowerShell script to another, enabling remote notifications and seamless script execution.
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Passing Function Parameters in PowerShell Scripts: A Guide to Remote Notifications

Introduction

Imagine you have two PowerShell scripts: the first (script1) acts as a controller and the second (script2) is responsible for displaying a toast notification on a remote computer. Your challenge is to dynamically pass arguments from script1 to script2 to personalize the notifications. This guide will help you understand how to effectively accomplish this using parameters and remote script execution.

The Problem

You want to invoke a function in script2 from script1, allowing your function parameters—like application name, title, text, and image—to be set in script1 while executing on a remote computer. However, attempting to directly pass parameters to script2 leads to an error, indicating that positional parameters cannot be found.

Example Errors

When running the initial code setup, you might encounter an error message like:

[[See Video to Reveal this Text or Code Snippet]]

The Solution

In order to successfully send parameters from script1 to script2, you need to adjust how you're invoking the remote command. Here’s a step-by-step breakdown of the solution.

Step 1: Using Invoke-Command Properly

The key issue is that Invoke-Command doesn’t automatically understand which parameters you're passing to script1. To resolve this, you need to explicitly tell PowerShell that those are arguments for the script using the -ArgumentList parameter.

Updated Invocation Command

Instead of using:

[[See Video to Reveal this Text or Code Snippet]]

Use this instead:

[[See Video to Reveal this Text or Code Snippet]]

Step 2: Simplifying Script1

If the goal of script1 is solely to define a function and then call it, you can streamline the process. Instead of creating a separate function within script1, you can let script1 handle the parameters directly. This minimizes complexity and improves execution efficiency.

Revised Code for Script1

Here’s how script1 could look after simplification:

[[See Video to Reveal this Text or Code Snippet]]

Conclusion

By following these steps, you can successfully pass function parameters from one script to another in your PowerShell environment, ensuring that your notifications are displayed correctly on the remote computer. This method not only improves the functionality of your scripts but also streamlines your workflow, making it easier to manage remote tasks.

Feel free to modify your parameters as needed to customize your notifications further. Happy scripting!