.Net Maui, how to run method after page is shown?

Question

.Net Maui, how to run method after page is shown?

Phunction 301

Hi, I am trying to find a way to run a method after a contentpage is showing on the screen.

OnAppearing() does not work as it fires before the page is actually loaded. Is there any way to do this without using a timer?

It seems strange there is no built in method for this, unless I am missing something.

I show the page with Navigation.PushAsync

Walter Grimm 20 Reputation points

2023-12-27T15:23:20.4166667+00:00

Just to wrap my head around this, there is no event that tells me that the page has been loaded and been displayed, I was under the assumption that this would be one of the basics, I want to display a startpage, and than continue with lazy load functions, is there a plan or schedule to implement this

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Walter Grimm 20 Reputation points

2023-12-27T15:23:20.4166667+00:00

Just to wrap my head around this, there is no event that tells me that the page has been loaded and been displayed, I was under the assumption that this would be one of the basics, I want to display a startpage, and than continue with lazy load functions, is there a plan or schedule to implement this

Answer 1

Yonglun Liu (Shanghai Wicresoft Co,.Ltd.) 50,126 Microsoft External Staff

Hello,

Hi, I am trying to find a way to run a method after a contentpage is showing on the screen.

Lifecycle functions that are triggered after a page is fully loaded are not yet included in MAUI.

In fact, there is a Loaded event in MAUI that fires the moment your control is creating.

Occurs when a VisualElement has been constructed and added to the object tree. This event may occur before the VisualElement has been measured so should not be relied on for size information.

You could use this event as the following code:

YouControl.Loaded += (s, e) => {        };

Please refer to VisualElement.Loaded Event to get more details.

Best Regards,

Alec Liu.

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Phunction 301 Reputation points

2023-02-07T01:07:33.2133333+00:00

Looks like this will work for now, thanks.
iPaul 0 Reputation points

2024-01-08T19:56:19.75+00:00

This doesn't work. The event never fires. I need an event that happens after all the page's views are measured (widths and heights should be set). Is this platform seriously this bad? Right now, my only solution is a complete hack - setting a timer for one second and running my code after a second.
Ian Paul 0 Reputation points

2025-02-05T11:32:48.4666667+00:00

Took quite a bit of searching to end up here. However, putting a Loaded event handler on my ListView let me scroll to the current item in my list on the initial appearance. Previously, it was only scrolling to the current item on refresh.
Helen Mamalaki 15 Reputation points

2025-02-24T15:58:16.4866667+00:00

This doesn't work for me either. I subscribe to the loaded event on a ActivityIndicator and the spinner never gets the chance to visibly render before my code is already executed. The point is to find a way to execute it AFTER the page or visual element has become visible. :(

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