How to check or uncheck a checkbox in a gallery without appending to a variable

[Anonymous]

All,

Can I am new to power apps and have been stuck on this. Can someone help please.

I have a gallery with 4 checkboxes in it.  I need to email those that are selected.

This is what I have but not sure hwo to fix it.

1) OnCheck I have 

Set(ItemsSelected, Concatenate(ItemsSelected, ThisItem.'Task Name'))

Q1) every time the form is submitted, it seems that ItemsSelected Variable grows. I tried to use reset and it did not work.

Q2) if user decideds to uncheck a checkox, how do I remove from from my variable?

Any pointer is greatly appreciated.

Thanks,

[KickingApps]

Will you please send a screen shot of your gallery?

Have you considered a collection for the items that are checked within the gallery.  Upon Submit, you can clear the collection.  If you uncheck an item, you can easily remove it from the collection.

[Anonymous]

Thanks for replying.  Yes, I tried to use collection, however my chackboxes are in a gallery and I I need a 
forAll and Filter to select only those checkboxes that are selected. No matter how I did it,  I could not get the correct syntax for 

ForAll (Filter(Collection name)) 

that is basically what the issues is. 

I definced a global variable and appended all those checkboxes that were selected , however If a user uncheck one, I can't drop it (not a good approach)

I tried to use a collection, and if 3 items are selected, only one of them shows up in the collection. 
how do you do ForAll and select only those that are checked so my the collection should get 3 rows in case 3 checkboxes are selected. I can't use item1, item2 ... since ony one checkbox name is available.

Thanks again

,

[gokello]

As @KickingApps has mentioned, best is to use a collection.

I have an app that does something similar and this is my syntax for the "For All":

ForAll(Filter(galClientList.AllItems,chkSelectRecord.Value = true),Collect(colSelectedItems,{ID:Value(lblID.Text)}));

Where:

- galClientList is the name of the gallery

- chkSelectRecord is the name of the checkbox

- colSelectedItems is the name of the collection

I am holding the IDs in the collections

[Mike8]

Hello Gulf_Man,

You also add a label (you don't need the label but it a way to display the result)
Label1.Text= Concat(Gallery1.AllItems,If(Checkbox1.Value,'Task Name'))

Instead of Gallery1 and Checkbox1, you need to use the names of your Gallery and Checkbox

[Anonymous]

Thanks for your instructions. I will give it a try and le you know in a couple of days.. Greatly appreciated.

[v-xida-msft]

Hi @Anonymous ,

Based on the formula that you provided, I think the global variable could achieve your needs.

As an alternative solution, you could consider take a try to initialize a Collection to collect the Task Name when the corresponding CheckBox is checked.

I have made a test on my side, please take a try with the following workaround:

Set the OnCheck property of the Checkbox to following:

Collect(ItemsSelected, ThisItem.'Task Name')

Set the OnUncheck property of the Checkbox to following:

Remove(ItemsSelected, LookUp(ItemsSelected, Value = ThisItem.'Task Name'))

If you want to use ForAll function to collect those checkboxes that are selected, I have made a test on my side, please take a try with the following workaround:

ForAll(
         Filter(Gallery_M.AllItems, Checkbox1.Value = true),
         Collect(
                    ItemsSelected,
                    'Task Name'
         )
)

If you want to display the selected Task Name within a Label control, please set the Text property of the Label to following:

Concat(ItemsSelected, Value & "; ")

Best regards,

[Anonymous · Accepted solution]

Thank you all for taking the time to respond to my question.