Limit the text content of combo box items to a single line.If the collection in a combo box is long enough, a scroll bar will appear to accommodate it. You can save space and minimize distraction by using a combo box.Ī combo box in its compact state can show a header.Īlthough combo boxes expand to support longer string lengths, avoid excessively long strings that are difficult to read. If the default option is recommended for most users in most situations, showing all the items by using a list view might draw more attention to the options than necessary. Use a combo box when the selection items are of secondary importance in the flow of your app.When there are fewer than five items, consider using radio buttons (if only one item can be selected) or check boxes (if multiple items can be selected).Use a list or grid view instead of a combo box to display items that contain multiple lines of text or images.Use a drop-down list to let users select a single value from a set of items that can be adequately represented with single lines of text.When the user expands the combo box, it displays the list of selectable items. When the combo box is closed, it either displays the current selection or is empty if there is no selected item. You can learn more about list boxes at the end of this article. A list box is similar to a combo box, but is not collapsible/does not have a compact state. A combo box starts in a compact state and expands to show a list of selectable items. Use a combo box (also known as a drop-down list) to present a list of items that a user can select from.
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