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Anonymous
Not applicable

Combo box selected items limit

Hello,

 

I've been struggling quite a lot to find a solution for this and I'm not sure wether it's possible. I have a combo box with N options and I'd like to set the maximum amount of how much choices the user can make in 10. I've tried to use this on the Disabled property: "If(CountRows(ComboBox3.SelectedItems) > 10,DisplayMode.Disabled,DisplayMode.Edit)" but this wouldn't allow the users to change their previous selection so it doesn't really fit my needs.

 

I appreciate any help, thank you!

1 ACCEPTED SOLUTION

Accepted Solutions
iAm_ManCat
Most Valuable Professional
Most Valuable Professional

Hi @Anonymous,

 

You can't hardcode it currently as there's no option for limiting, but you can lead the user to do it:

I would have the following triggered via the OnChange of your combo box:
If(
   CountRows(ComboBox3.SelectedItems) > 10,
   
notify("Please choose no more than 10 items", notificationtype.error)
)

 

..then I would have the Displaymode for any Submit  button have your
If(CountRows(ComboBox3.SelectedItems) > 10,DisplayMode.Disabled,DisplayMode.Edit)
That way they can't submit until they've fixed their error.

 

Let me know if that would be an acceptable workaround!

 

Cheers,

@iAm_ManCat


@iAm_ManCat
My blog


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View solution in original post

10 REPLIES 10
v-monli-msft
Community Support
Community Support

Hi @Anonymous,

 

Sorry but I cannot think of other ways to achieve your requirement. There is no such property that you could set for combobox control according to https://docs.microsoft.com/en-us/powerapps/maker/canvas-apps/controls/control-combo-box. You might want to add an idea in the PowerApps Ideas forum, to ask for adding a property to limit the max selectable numbers of options in combobox control.

https://powerusers.microsoft.com/t5/PowerApps-Ideas/idb-p/PowerAppsIdeas

 

Regards,

Mona Li

Community Support Team _ Mona Li
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.
iAm_ManCat
Most Valuable Professional
Most Valuable Professional

Hi @Anonymous,

 

You can't hardcode it currently as there's no option for limiting, but you can lead the user to do it:

I would have the following triggered via the OnChange of your combo box:
If(
   CountRows(ComboBox3.SelectedItems) > 10,
   
notify("Please choose no more than 10 items", notificationtype.error)
)

 

..then I would have the Displaymode for any Submit  button have your
If(CountRows(ComboBox3.SelectedItems) > 10,DisplayMode.Disabled,DisplayMode.Edit)
That way they can't submit until they've fixed their error.

 

Let me know if that would be an acceptable workaround!

 

Cheers,

@iAm_ManCat


@iAm_ManCat
My blog


Please 'Mark as Solution' if someone's post answered your question and always 'Thumbs Up' the posts you like or that helped you!


Thanks!
You and everyone else in the community make it the awesome and welcoming place it is, keep your questions coming and make sure to 'like' anything that makes you 'Appy
Sancho Harker, MVP


Anonymous
Not applicable

Thanks for your help with this post and all the knowledge you've provided the PowerApps Community @iAm_ManCat

 

@Anonymous

iAm_ManCat
Most Valuable Professional
Most Valuable Professional

You're welcome, always glad to help 🙂


@iAm_ManCat
My blog


Please 'Mark as Solution' if someone's post answered your question and always 'Thumbs Up' the posts you like or that helped you!


Thanks!
You and everyone else in the community make it the awesome and welcoming place it is, keep your questions coming and make sure to 'like' anything that makes you 'Appy
Sancho Harker, MVP


Anonymous
Not applicable

I know this is an old post, but in case anyone runs into a similar issue, I thought of another possible solution. Set the OnChange property of the combobox to:

If(CountRows(Combobox.SelectedItems)>10, Reset(Combobox)

This will cause all 10 items to clear when the user attempts to select an 11th item. Not ideal, but it will enforce the desired limit. I tried creating a Gallery and setting its 'items' property to (FirstN,Combobox.SelectedItems,10) - Then setting the Combobox's DefaultSelectedItems to Gallery.AllItems. If it worked, that would result in perfect behavior -the Combobox would reset to the first 10 values when the user tried to select an 11th, but to the user it would simply appear they couldn't select an 11th option. Unfortunately, that creates a circular reference, which isn't allowed.

Anonymous
Not applicable

Ok - totally solved!

 

Set OnChange property of Dropdown to:

If(CountRows(Selections)=3,UpdateContext({Selections: Blank()}));If(CountRows(Dropdown.SelectedItems)>10,Reset(Dropdown));UpdateContext({Selections: Dropdown.SelectedItems.Value})

 

Set DefaultSelectedItems property of Dropdown to:

If(Not(IsEmpty(Selections)),FirstN(Selections,10)))

 

The effect is that attempting to select an 11th item makes the drop-down list close, and the 11th item is not added. The first 10 selections are still there. I'd suggest either using a Concat() to string together all of the selections and displaying with a label, or triggering an error message - so your user realizes they can only select 10 items.

Anonymous
Not applicable

I've added this option as a new idea, as I think it should be added to the settings of a Combo box:

https://powerusers.microsoft.com/t5/PowerApps-Ideas/Add-a-maximum-selectable-items-option-to-Combo-b...

It would make our life a bit easier Smiley Wink

This worked great for me, just one question: why is selections set to 3?

kcb_in
New Member

Hello,

 

May be this will help to restrict number of selections in a ComboBox.

Step 1: In Screen OnVisible property,

OnVisible

ClearCollect(DropdownData, {.......});

If(IsEmpty(Items), ClearCollect(Items, First(DropdownData)));

 

Step 2: Insert a ComboBox. Assign it's properties as follows,

ItemsDropdownData

 

OnChangeClearCollect(Items, ComboBox.SelectedItems);
If(CountRows(ComboBox.SelectedItems)>10,Reset(ComboBox));

 

DefaultSelectedItemsFirstN(Items,10);

 

In this approach, It won't allows the 11th Selection.🙂

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