PL 400 PCF Controls (Power Apps Component Framework) 3

Question 1

Which PCF context API provides methods to format dates, numbers, and currency values according to the current user's locale?

Accepted Answer

context.formatting

Answer

`context.formatting` exposes methods such as `formatDateShort`, `formatDecimal`, and `formatCurrency` that automatically respect the user's regional settings stored in Dataverse.

Question 2

What does `context.webAPI` enable a PCF control to do?

Accepted Answer

Perform CRUD operations (create, retrieve, update, delete) on Dataverse records from within the control

Answer

`context.webAPI` is the Dataverse-specific data access layer built into the PCF framework, providing methods like `createRecord`, `retrieveRecord`, `updateRecord`, and `deleteRecord`.

Question 3

What is the recommended approach for supporting multiple languages in a PCF control's UI text?

Accepted Answer

Define resx string resource files in the manifest and retrieve translated strings at runtime via context.resources.getString('key')

Answer

PCF's native localization model uses .resx files declared in the manifest; the framework loads the appropriate file based on user language and exposes strings through `context.resources.getString()`.

Question 4

In the PCF manifest, what is the behavioral difference between a property with `usage='bound'` versus `usage='input'`?

Accepted Answer

'bound' enables two-way data flow (read and write); 'input' is read-only (the control cannot push values back)

Answer

A 'bound' property participates in two-way binding — the control can both read the current value and write a new value back via `notifyOutputChanged` and `getOutputs`; an 'input' property is read-only from the control's perspective.

Question 5

Which PCF API should a developer use to determine whether the control is running in a web browser, a mobile app, or a tablet app?

Accepted Answer

context.client.getClient()

Answer

`context.client.getClient()` returns a value from the ClientType enum (Web, Mobile, Tablet) that allows the control to adapt its layout and behavior for the current client.

(PL 400) Microsoft Certified Power Platform Developer Associate Practice Test

(PL 400) Microsoft Certified Power Platform Developer Associate Practice Test

PL 400 PCF Controls (Power Apps Component Framework) 3