Canvas Apps - The easiest way to show Confirmation Dialogs

March 13, 2026

3 min read

Formula

For around the past 9 years, showing confirmation dialogs in canvas apps has been difficult. This is a common feature requirement, particularly when adding buttons to delete records.

The typical workaround involves building a custom dialog that's hidden and shown through the use of variables when the user triggers an action that requires confirmation.

The great news is that Power FX has introduced a new Confirm function, which is available in both canvas and model driven apps.

Here's a walkthrough on how to use this function.

How to Show a Confirmation Dialog - Walkthrough

To demonstrate how this new feature works, here's a screen that I created in a canvas app with the 'Table and form' template.

After creating this screen, I set the data source of the table and form controls to a Dataverse table called 'Books'.

This screen template already includes a delete button, as shown in the screenshot beneath.

Notice how this screen template includes DeleteConfirmDialogContainer. Prior to the new Confirm dialog, the content here is what would need to be created we wanted to display a confirmation dialog using the traditional method.

To use the new confirmation dialog, we can set the OnSelect property of the delete button using this syntax.

If(Confirm("Are you sure you want to delete this record?"),
    Remove(Books, CurrentItem)
);

To explain this syntax, the Confirm function returns true if the user clicks 'confirm', and false if the user clicks 'cancel'. By wrapping the call in an If statement, we can specify the formula that runs when the user clicks 'confirm'.

To test this, we can now run the screen and click the delete button. The confirmation dialog will appear, as shown below.

Clicking the Confirm button will now call the Remove function to delete the record.

How to Customise the Confirmation Dialog

To customise the appearance of the dialog, we can pass a record to the Confirm function. This enables us to set a title, subtitle, and the text that appears on the buttons. The syntax to set these values look like this:

If(Confirm("Are you sure you want to delete the record '" & CurrentItem.BookName & "'?",
            {
            Title: "⚠ Delete confirmation",
            Subtitle: "This action can't be undone.",
            ConfirmButton: "Delete",
            CancelButton: "Cancel"
        }),
    Remove(Books, selectedRecord)
);

The colour of the 'confirm' and 'cancel' buttons will inherit the theme colour of the app, so the only way to change those would be to change the theme.

Here's a screenshot of how these elements look at runtime.

In the screenshot above, note how we can insert emoji symbols like ⚠ into the dialog. In Windows, we can use the

Windows . shortcut key to insert emojis.

Are there any limitations?

The main limitation of the Confirm function is that it isn't possible to add additional buttons, or to show only a single button.

The ability to show only a single button would enable us to display a model message box with an 'OK' button (eg, a message box with 'This record has been deleted'). Hopefully this feature might be added at a future time, as it would provide more visible alerts, compared to the banner messages that the 'Notify' function provides.

Conclusion

Up till now, displaying a model confirmation dialog involved much work. The Confirm function is a very welcome addition that makes this task much simpler.