The C1ComboBox allows users to input data by either selecting an item from the drop-down or by typing text into the text box. The control comes with editing support to help users achieve customization. The C1ComboBox class provides the IsEditable property to enable or disable editing in the ComboBox.

The IsEditable property accepts Boolean values, true or false. You can set this property to true to enable editing, while setting it to false disables editing.

ComboBoxEdit.IsEditable = false;