Book Image

Extending Microsoft Power Apps with Power Apps Component Framework

By : Danish Naglekar
Book Image

Extending Microsoft Power Apps with Power Apps Component Framework

By: Danish Naglekar

Overview of this book

Power Apps Component Framework is used by professional developers to extend the capabilities of model-driven and canvas apps. Extending Microsoft Power Apps with Power Apps Component Framework will take you through the basic as well as advanced topics using practical examples. The book starts by helping you understand the fundamentals of the framework, its lifecycle, and the tools that you'll use to build code components using best practices and file management guidelines. You'll then learn how to extend Power Apps step by step and apply the principles and concepts covered in the book to build code components for field type attributes. The book covers different ways of debugging code components and guides you through the process of building code components for datasets. You'll also explore the functions and methods provided by the framework to enhance your controls using powerful sets of libraries and extensions. As you advance, you'll get to grips with creating and managing authentication profiles, discover different ways of deploying code components, and configure code components in model-driven and canvas apps. Finally, you'll learn some of the important features of the framework and learn modern web development practices. By the end of this Power Apps book, you'll be able to build, debug, enrich, and deploy code components confidently.
Table of Contents (18 chapters)
1
Section 1: Fundamentals of the Power Apps Component Framework
6
Section 2: Building and Managing Code Components
12
Section 3: Enhancing Code Components and Your Development Experience

Inspecting the caching mechanism

Caching is a technique that's used to store frequently used data in memory so that, when the same data is needed again, it can be retrieved from memory, thus saving time and improving the performance of the component. Let's look at the caching mechanism provided by the framework.

The Power Apps component framework provides a third parameter in the init method, called state, that saves the states of objects in a single session for a user. So, let's see how we can utilize the state to persist the data in the code component.

Saving the state in the code component is very straightforward. The framework provides a method called context.mode.setControlState, which takes in one parameter of the Dictionary type. This is provided by the framework. Before we start, we are going to follow a strategy similar to the one we used in Chapter 5, Code, Test, and Repeat, where we initialized some of the properties at a class level because they were...