Should a linked combo be total empty if you cant select from it?

1. How do I check if a combobox is empty in Powerapps?
2. How do I set a default value on a combo box in Powerapps?
3. What is the difference between combobox and DropDownList?
4. What are the properties of combo box?

How do I check if a combobox is empty in Powerapps?

If you want to determine there is nothing selected and nothing searched within Combo Box, you should use the And operator to combine the conditions that check Combo Box selected and Combo Box search text.

How do I set a default value on a combo box in Powerapps?

With a combo box, “default” isn't a useful property. To set the default value, use “DefaultSelectedItems” instead. This causes specified records to display by default. To set DefaultSelectedItems, use the Filter function for the same datasource you used for your Items property.

What is the difference between combobox and DropDownList?

A drop-down list is a list in which the selected item is always visible, and the others are visible on demand by clicking a drop-down button. A combo box is a combination of a standard list box or a drop-down list and an editable text box, thus allowing users to enter a value that isn't in the list.

What are the properties of combo box?

A ComboBox displays a text box combined with a ListBox, which enables the user to select items from the list or enter a new value. The DropDownStyle property specifies whether the list is always displayed or whether the list is displayed in a drop-down.