A combo box control is one that allows users to make selections from provided choices. Supports search option and we can select multiple selections at a time
A Combo box control allows you to search for items you will select. The search is performed server-side on the Search Field property, so performance is not affected by large data sources.
On the Power Apps studio , Go to the Insert tab -> Select Input -> Click on Combo Box as shown below.

Properties :- Combo Box has many properties by using which we are performing different actions on a Com Box
Com Box properties are shown on the left navigation pane and also the Display properties of the Combo Box will be shown on the right navigation bar.

Advanced properties :-

Items The source of data from which selections can be made.

DefaultSelectedItems The initial selected item(s) before the user interacts with the control.

SelectMultiple Whether the user can select a single item or multiple items.

IsSearchable Whether the user can search for items before selecting.


SearchFields The data fields of the data source searched when user is entering text.

Display Mode Whether the control allows user input (Edit), only displays data (View), or is disabled (Disabled).

OnChange Actions to perform when the user changes a selection
Onselect Actions to perform when the user taps or selects a control
Visible Whether a control appears or is hidden.


Width The distance between a control’s left and right edges.

X The distance between the left edge of a control and the left edge of its parent container (screen if no parent container).

Y The distance between the top edge of a control and the top edge of the parent container (screen if no parent container).

InputTextPlaceholder Instructional text shown to end users when no items are selected.

Layouts of Combo Box :-
Basically Combo Box has 3 Layouts

single Layout will show single line of text in the Combo Box i.e Primary text & it will ask for search field.

Double Layout will show Two lines of Text in the combo Box i.e Primary and secondary. It also will ask for search field

person Layout is same as double layout but it has an extra field “Image”.
