Question

Combobox datasource has been assigned with

cmbCombobox.DataSource = myCollection

where myCollection has type MyCollection: List

How can I clear items in combobox?

Answer 1

When you data bind a control, it will synchronize with that collection. In order to clear the items in your ComboBox set it’s DataSource to null.

cmbComboBox.DataSource = null;

If your combobox is not databound (no DataSource) then you can do

cmbComboBox.Items.Clear();