What is the Refresh function?
Simply put, the Refresh function updates the data displayed in a control or collection in your Power App. This can be useful in scenarios where you need to ensure that the data displayed is up-to-date or when you need to refresh an external data source.
How to use the Refresh function
Using the Refresh function in Power Apps is straightforward. Here’s how you can use it in your app:
1. Identify the control or collection that you want to refresh. This could be a gallery, a data table, or a dropdown menu, among others.
2. Add the Refresh function to the control or collection’s OnSelect property. You can do this by selecting the control or collection in the Power Apps designer and then navigating to the OnSelect property in the right-hand pane.
3. In the OnSelect property, enter the Refresh function followed by the name of the control or collection you want to refresh. For example, if you have a collection named MyCollection, the Refresh function would look like this: Refresh(MyCollection).
4. Save your changes and test the Refresh function by interacting with the control or collection.
Common scenarios where the Refresh function can be useful
The Refresh function can be useful in a variety of scenarios. Here are a few examples:
1. Updating data after changes are made
Let’s say that you have a data table that displays a list of items. A user can edit the details of an item in the table, but you want to ensure that the table is updated with the new details after the user saves their changes. By adding the Refresh function to the OnSelect property of the Save button, you can ensure that the data table is updated with the latest information.
2. Refreshing external data sources
If your Power App is connected to an external data source, such as a SharePoint list or a SQL Server database, you may need to refresh the data periodically to ensure that it’s up-to-date. By adding a Refresh button to your app and using the Refresh function in its OnSelect property, you can ensure that the data is always current.
3. Triggering updates based on user actions
In some cases, you may want to trigger an update to a control or collection based on a user action. For example, if a user selects an item from a dropdown menu, you may want to update a data table to display details about the selected item. By using the Refresh function in the OnChange property of the dropdown menu, you can ensure that the data table is updated whenever a new item is selected.
The Refresh function is a powerful tool in Power Apps that can help you keep your data up-to-date and ensure that your app is working as intended. By following the steps outlined in this article, you can start using the Refresh function in your Power Apps today.