Checkboxes - activate one at a time, not both, how?

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Posted on 8 Apr 2021 08:25:52 by PowerSäm

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Hello together,

I am relatively new here... I am looking for a way to set the control boxes so that when one is activated, the other can not be activated, that is, that only "YES" or only "NO" can be checked, not both. How can this be set? (See picture)

I am grateful for any help.

Best regards

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Remhk303 2 on 25 Feb 2025 at 02:14:49

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Checkboxes - activate one at a time, not both, how?

Easiest way I found is as follows:

1. For the OnCheck property of the checkbox, write a ClearCollect function, followed by a Reset function to reset the checkbox.

ClearCollect(colSingleCheckbox, ThisItem.Value);

Reset(Checkbox);

2. For the Default property of that same checkbox, enter the following:

ThisItem.Value in colSingleCheckbox

What that'll do is create kind of a circular logic type deal where every time you check a new box, it'll clear collect the selected value and then use that value as the default for when the checkbox gets reset. It works for me so give it a try.

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v-xiaochen-msft on 09 Apr 2021 at 03:13:36

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Re: Checkboxes - activate one at a time, not both, how?

Hi @PowerSäm ,

1\ Add a check box control 'Checkbox1' and set its Default property to:
false

Set 'Checkbox1' 's OnCheck property to:
Reset(Checkbox2)

2\ Add a check box control 'Checkbox2' and set its Default property to:
false

Set 'Checkbox2' 's OnCheck property to:
Reset(Checkbox1)

3\ The result is as follows:
Best Regards,
Wearsky
If my post helps, then please consider Accept it as the solution to help others. Thanks.

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Elias-V 88 on 08 Apr 2021 at 08:54:53

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Re: Checkboxes - activate one at a time, not both, how?

Hi PowerSäm,
it depends what behaviour you want your application to have. Would you prefer if the checkbox was clickable but automatically removed the check on the other checkbox, or rather that you can't check it.

Either way you could put checks on the OnCheck/OnUncheck actions.
For example if you want it to be uncheckable; in both checkboxes' OnCheck:
If(otherCheckbox.Value, false, true)

and if you want it to take override the other checkbox I think you'll need a variable to keep track for example something like
in the screen OnVisible you Set(varCheckboxOn1, false); Set(varCheckboxOn2, false);
checkbox1 Default: varCheckboxOn1
checkbox2 Default: varCheckboxOn2
and then on the OnCheck and OnUncheck action in both checkboxes you can adjust them however you want

Hope this helps

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