Select multiple items from the Blazor DropDown (multiselect). Bind to a collection, show a summary label for the selection, and set an equality comparer when binding to objects.
Use Chips="true" to display selected items as removable chips in the dropdown.
Use MaxSelectedLabels to limit displayed items and SelectedItemsText to show a custom message when many items are selected.
Use EqualityComparer to define custom comparison logic for determining when items are equal.
Set Multiple to true and bind Value to a collection (such as a List). The DropDown shows checkboxes and a summary of the selected items.
Bind Value to a collection of the value type and set an equality comparer so the DropDown can match selected objects back to the list items.
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