Increment input box inside gallery

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Posted on by JoaoSantos489

259

Hey guys, the image explains it self.

2 buttons, one to increment, the other to decrement the value form that input (txtQtd).

I´ve tried to use patch() on select of the button:

Patch(
 colResumo;
 ThisItem;
 {txtQtd: txtQtd + 1}
 )

But I got an error "The specified column "txtQtd" does not exist" because this is not an item, it´s a text input.

Any ideas on how to do this?

Thanks in advance

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Building Power Apps

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RandyHayes 76,299 Super User 2024 Season 1 on at

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@JoaoSantos489

What is the Text property of your label?

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fuzzy_fuzz 229 on at

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@JoaoSantos489

You have to look for the column where u get the quantity of items from. That is what you patch.

Patch( colResumo; ThisItem; {QuantityColumn: QuantityColumn + 1} )

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JoaoSantos489 259 on at

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Sry @RandyHayes it´s a text input, not a label.
(Edited the post)

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JoaoSantos489 259 on at

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@fuzzy_fuzz it´s a input text. When I add the item to the gallery (rigth) that input box it´s empty.
And you write it down the quantity that you want.

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RandyHayes 76,299 Super User 2024 Season 1 on at

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@JoaoSantos489

Okay...what is the Default property of your TextInput control then?

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JoaoSantos489 259 on at

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Thanks for the fast reply.
It´s "0"

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RandyHayes 76,299 Super User 2024 Season 1 on at

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@JoaoSantos489

So do you not have any column in your underlying source for the gallery? Or in other words, what is the Items property of your gallery?

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JoaoSantos489 259 on at

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Well no...Is it only possible with a column?

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RandyHayes 76,299 Super User 2024 Season 1 on at

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@JoaoSantos489

Properties in PowerApps derive their values based on a formula. You cannot alter them without one.

So, in your first formula, you were trying to change the control directly...you can't do that in PowerApps.

PowerApps is built after Excel - so, just like in Excel, if you want a Cell to show a certain value, you put a formula in it - you don't have some formula in another cell try to "Set" the value of another.

But what is the Items property of the gallery?? Where are you getting the information for it?

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