Reset/Uncheck All Checkboxes in a Gallery

[Anonymous]

Hi,

I've tried searching for a solution. It seems the "Reset" property which could be used, does not exist anymore for Checkboxes.

I have a gallery which takes items out of a Dataverse collection (Order Products) and added a checkbox. How can I uncheck all checkboxes of this gallery?

Thanks!

[BrianS]

Not sure what you mean about the Reset not existing. It is still a Property of the Checkbox. Try setting it to a variable and then have a Button that sets the variable to true and then back to false. That will trigger the reset. Just make sure the Default is false

[RandyHayes]

@Anonymous 

Since there is no Reset property to use, you will need to utilize the Default property of the Checkbox.

If you have another checkbox outside of the gallery to perform the Check All, Uncheck All option, then you can incorporate that into the Default property.

Example, If you have an outer checkbox called chkCheckAll, then you can use that in the Default property of the gallery checkbox:  chkCheckAll.Value will set it checked or unchecked depending on the outer check.

I hope this is helpful for you.

[BrianS]

Not sure why someone is saying there isn't a Reset on Checkboxes

[RandyHayes]

@BrianS 

You are looking at a regular canvas app.  @Anonymous is referring to a Teams app.  There is no reset property on the checkbox in the Teams PowerApps!

[BrianS]

Got it - did not see that in the OP

[RandyHayes]

@BrianS 

Yes...wasn't really stated there, but when Dataverse was mentioned...that was the clue to me.

[Anonymous]

@BrianS  @RandyHayes 

I've checked multiple times now and the Reset property just simply doesn't exist / is not selectable in the UI.

Apologies for the German Language, Language settings are horrible in the whole PowerPlatform/Office365.

I am actually using a "Custom Page" opened from Dynamics 365 here, not sure if this might make a difference.

There is also no "Default Property" on the Checkbox, I assume you mean the property "Value"?

Pretty sure I am not missing anything here.

As for the solution without a Reset property. I don't have a "Select All" Checkbox which value I could use, but rather on the Click of the "Add" button the selected Order Lines are selected for delivery and will appear in the lower Grid. Just with the click of the button I want to unselect all checkboxes of the upper Gallery (Order Lines).

My only guess right now is to use the "Checked" property of the Checkbox and declare a new property in the Items of the Gallery which I then use as 

ThisItem.IsChecked

Though, haven't figured how I can add a new "temporary" property to a Dataverse Collection, it only allows for elements that exist as Column in Dataverse...  

Cheers

[RandyHayes · Accepted solution]

@Anonymous 

Sorry, I forgot there is no Default on them either.  The PowerApps subset in Teams is *really* poor!!

It is the Checked property that you want to work with as the Default.

You don't need to add any other columns to the gallery.  The control will reference what you want.

I would suggest using a context variable in the add button to perform the reset.

Ex.  UpdateContext({lclCheckValue: false})

And set the Checked property then to lclCheckValue

[BrianS]

There may be something else to try - I have been told it works with some other controls. You could try copying the check box from a Canvas app and pasting it onto a screen in the Teams version.