How to Use Power Apps: Using the Param Function
Learn how to use Power Apps to pass data between applications using the Param function. In this lesson from our Power Apps – Enhanced Skills course, you'll see a practical demonstration of how Power Apps can retrieve parameters directly from a URL and dynamically populate fields inside an app.
If you're learning how to use Power Apps for real-world development, understanding how to pass parameters through the address bar is an essential technique. Even though Power Apps apps can share data through Dataverse or other sources, there are many situations where apps must communicate without a shared database. That's where the Param() function in Power Apps becomes extremely valuable.
In this tutorial, you'll discover how developers can structure URLs with parameters, retrieve those values using the Param function, and use them inside labels or other controls within a canvas app. This technique is commonly used when integrating multiple apps, automating workflows, or passing contextual information between systems.
Whether you're a citizen developer, Power Platform professional, or IT specialist, this lesson will help deepen your understanding of how to use Power Apps for cross-app communication and dynamic app behavior.
📚 What You'll Learn in This Lesson
• How the Param() function works in Power Apps
• How to structure a URL to pass parameters into an app
• How to retrieve values from the address bar in a canvas app
• How Power Apps populates controls dynamically from parameters
• When passing parameters is useful vs. using a shared database like Dataverse
⏱️ Lesson Chapters
0:00 – Introduction to the Power Apps Param function
0:21 – Understanding the app screen and label setup
0:45 – Using expressions and the Param() function in labels
1:18 – Defining parameter names (UserID, Country, SecurityLevel)
1:50 – How Power Apps retrieves values when the screen loads
2:07 – Why publishing the app is required for testing parameters
2:17 – Finding your Power Apps web link in the Microsoft tenant
3:05 – Structuring parameters in a URL string
4:00 – Understanding parameter name/value pairs
4:30 – Testing the URL with parameters in a new browser
4:57 – Seeing Param() populate the app fields automatically
5:23 – Understanding ampersands and multiple parameters
5:34 – When to use parameters vs Dataverse data sharing
5:56 – Why developers should still know this classic technique
🚀* Explore the Full Power Apps Course*
This lesson is part of our Power Apps – Enhanced Skills course designed for developers who already understand the basics and want to build more advanced solutions.
Inside the course you'll learn how to:
• Upload files to SharePoint and other data sources
• Create popup dialog-style windows in canvas apps
• Use powerful functions like Patch, ForAll, Lookup, and Table
• Send PDFs generated from Power Apps via email
• Store and manage files in SharePoint
• Merge and manage complex variables with Collect and ClearCollect
• Solve delegation issues in Power Apps
• Build responsive apps using containers and screen properties
• Connect multiple apps using parameters and advanced techniques
Explore the full course: https://www.intellezy.com/software/co...
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❓ Frequently Asked Questions
Q: What does the Param function do in Power Apps?
A: The Param() function retrieves values passed into a Power Apps app through the URL. Developers use it to capture parameters such as user IDs, filters, or other contextual data.
Q: How do you pass parameters into a Power Apps app?
A: Parameters are appended to the end of an app's URL using a name/value pair format. Multiple parameters are separated by ampersands.
Q: Can Power Apps share data without using parameters?
A: Yes. Apps can share data using a common data source such as Microsoft Dataverse, SharePoint, or SQL databases. Parameters are useful when apps don't share a database.
Q: Why should developers learn parameters if Dataverse exists?
A: Passing parameters is still useful for launching apps with context, integrating external systems, and enabling communication between apps that don't share a data source.
Q: Is the Param function only used in canvas apps?
A: The Param() function is primarily used in canvas apps to read values passed through the URL and populate controls or variables dynamically.
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