How to implement onKeyDown or onKeyPress behaviour in a PowerApps Text Input

In this short video I demonstrate how to provide Key Down or Key Press functionality on a Power Apps Text Input by using the change event of a slider control in place of the change event of the Text Input. This can be useful if you want to call an API or change the value of a variable whenever a key is pressed in a Text Input.

[Stjopa-lqcv]

if you use modern controls, you need to change TextInput the variable TriggerOutput to "Key pressed" or "Delayed" 🙌🏼

[haroldburgos]

Amazing! This was exactly what I was googling. And didn’t find a forum that answered my question. This definitely did the trick.

[Bekesam]

Thank you Paulie, really appreciate your solutions to niche problems!!

[DeShonClark]

Interesting, I never ran into this issue before. But this is good to know. Thanks Paulie!!!

[wakalaboom]

Nice!! Thank you so much, spent a lot of time looking for a solution. This is a really easy and useful fix!

[KamrulHasan-dzvp]

Thanks for sharing this amazing technique, it taught me something new.

[officeready]

nice one Paul! Good outside the box thinking.

[dynalogia]

Thank you very much, you are a master powerapps

[EuroWin]

Great tip presented in an effective manner. Well done!

[husamalnasr]

thaaaanx for this Solution, i was looking for something like that to fire OnChange of Input field without focus

[devothunder]

awesome video! helped me immensely. i wanted to do a near 'real time' lookup when a user typed in a key to validate that the key was legitimate. it was really annoying to have the users click off the entry box to trigger the validation. thank you!

[Desmolas]

Awesome. This fixed my issue where a ClearCollect would not run within the OnChange event of a textbox.
The clearcollect ran fine when applied to a button etc, but doesnt run in most control OnChange events!

[timlewis]

Hello Paulie,

Curious if you can think of a way to immediately recognize a change in a text input, if a character(s) are highlight and replaced with the exact number of characters. In this instance, the slider default lenghth would not change, but the text in the input could be different.

Thanks!

[AmyCustomer]

Hi Paulie. New Sub here. This is a brilliant solution. These days can't you set the Delay on a text field and would that yield the same result? Either way this is so clever, the concept of using a different control to get the behavior your want. I have a problem. There's a known problem of OnChange events firing when you reload a gallery or datasource and it fires all of the ID collection routines to know which rows to update. I can see in the monitor all of these onChange events being fired and populating my change table with the IDs of many of those fields. I'm at a loss, with a grid I don't know any other way to patch those changes. I have noticed that it doesn't seem to populate ALL the IDs (I really can't tell, it's maddening. I have those OnChange events on many fields on many screens. Are you aware of this and do you have any clever suggestions to work around this? I know it's not really on topic but it may offer a workaround. Thanks in advance. Cheers.

[laboratorioscasasco]

Hi Paulie, one question, how do you plan to use the Onchange function so that, in a text search box, as you type letter by letter, the search returns matching results?

[johnfromireland]

Set visibility to false for the slider rather than a zero length, perhaps?

[robertmeier]

This does not work with Modern Controls, at least I have not been able to get it to work. The slider does not make a difference, but if you use the modern text input it does not work.