Inventory App, '+' and '-' buttons to change quantity

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Posted on by Jap11

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Hello,

I'm building an inventory app to manage stock and I want to include a '+' button and '-' button to change the quantity of stock for an item, i'm wondering if this is possible?

The data card I need to change is: Quantity_DataCard2

The value that needs changing is: DataCardValue15

I'm guessing I need to add some formula to the OnSelect for each of the buttons, but anything I have tried so far only removes the value completely.

Any help would be appreciated!

Cheers

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Building Power Apps

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v-mengmli-msft Microsoft Employee on at

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Hi @jap11 ,

What is Default of DataCardValue15? Parent.Default or ThisItem.Quantity?

If so, please try this.

OnVisible of screen.

Set(count,0)

Add an Up arrow and set the OnSelect of it.

Set(count,Sum(count,1))

Add a down arrow and set the OnSelect of it.

Set(count,Sum(count,-1))

Default of DataCardValue15

Sum(Value(Parent.Default),count)

Best regards,

Rimmon
Gochix 1,937 Moderator on at

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@jap11 ,

You could set the InputField Default property to variable varQuantity.
Set the varQuantity value on your record value when record is retrieved:
UpdateContext({varQuantity:LookUp(SP,ID = Gallery.Selected.ID,Quantity})

On + button set the OnSelect property to UpdateContext({varQuantity:varQuantity+1})
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Jap11 453 on at

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Hi @v-mengmli-msft - this worked, thank you very much.
Jap11 453 on at

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Hi @v-mengmli-msft - thanks again for your help yesterday! I hope you don't mind me asking but I've raised another related question earlier today so wondered if you may be have an idea on that also? Here is the link: https://powerusers.microsoft.com/t5/Building-Power-Apps/Audit-Log-for-Inventory-App/m-p/2746088/emcs_t/S2h8ZW1haWx8dG9waWNfc3Vic2NyaXB0aW9ufExWWFZCN1FLSzYwSTFOfDI3NDYwODh8U1VCU0NSSVBUSU9OU3xoSw#M673756

No problem if not but figured it was worth a shot!

Thanks!