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Hi, I am beginner of powerapps

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Posted on by Community Power Pla... Microsoft Employee

I have a requirement to design a dropdown in PowerApps, Where if I have 10 dropdown values inside that dropdown in which 3 of them will be mandatory to select. My scenario-> I need my users to select mandatorily 3 values from dropdown and submit each time. in addition they can even select additional values after selecting these mandatory values. These dropdown values will be from SharePoint list. Kindly guide me.

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Pstork1 69,657 Most Valuable Professional on at

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I assume you mean combobox rather than dropdown, since dropdowns can't multiselect. But, there is no setting on the combobox that will let you require 3 selections. But you can change the display mode state of the submit button if less than three items are selected. To do that put the following formula in the OnChange property of the ComboBox.

Set(selectedCount, CountRows( ComboBox2.SelectedItems))

Then set the displayMode property of the submit button to:

If(selectedCount< 3,DisplayMode.Disabled,DisplayMode.Edit)

They will not be able to submit the selections unless they select at least 3 items.

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v-siky-msft Microsoft Employee on at

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Hi @Anonymous ,

As @Pstork1 said, i believe you are using combo box. I also think you control the Submit button Display mode, If the amount of selected items is large than 2, then the button is in edit mode. Otherwise, it is in Disabled mode, and show a warning in a label.
Set DisplayMode of Submit button:
If(CountRows(ComboBox1.SelectedItems)>=3,DisplayMode.Edit,Disabled)
Set Text of Label:
If(CountRows(ComboBox1.SelectedItems)<3,"Note: Please select more then 3 items！")
If the combo box is in a form, we can more easily use the errormessage label in data card to display a warning.
Modify the Text of ErrorMessage label:
If(CountRows(DataCardValue1.SelectedItems)<3,"Note: Please select more then 3 items！",Parent.Error)
Sik

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