RadComboBox.DropDownOpened Event
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RadComboBoxDropDownOpened Event
Occurs when the drop-down list of the combo box opens.

Namespace: Telerik.Windows.Controls
Assembly: Telerik.Windows.Controls.Input (in Telerik.Windows.Controls.Input.dll) Version: 2018.2.515.40 (2018.2.515.40)
Syntax
public event EventHandler DropDownOpened

Value

Type: SystemEventHandler
See Also