In the Blazor DropDownList it would be great to provide custom text or template to replace the "no data" message when the Data property returns an empty collection. Often, in cascading dropdowns, an empty list occurs because a value up the hierarchy has not been chosen yet. For example, if you have dropdowns for County and City, the City dropdown will be empty until a County is selected. It would be nice if the City dropdown, in that case, could say "Please select a county first" instead of "no data".

Thanks.

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This is also applicable to the MultiSelect, ComboBox, AutoComplete. 

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