Regular Expressions for Validation | Canvas Apps

Introduction

Power Apps Canvas apps allow developers to create custom applications with a rich user interface. One common requirement is to validate user input before processing it further. Regular expressions provide a flexible way to define complex patterns for validation. In this blog post, we’ll explore how to use regex expressions to apply validations and rules within a Canvas app.

Prerequisites

Before we begin, make sure you have a basic understanding of Power Apps and its components.

1. Email Validation

Let’s start with a practical example: validating email addresses. We want to ensure that users enter valid email addresses in a text input control. Here’s how you can achieve this using regex:

1. Create a Text Input Control: Add a text input control to your Canvas app where users can enter an email address.
2. Apply Regex Validation:Use the IsMatch function to check if the entered email matches a valid email pattern.

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