ComboBox.DropDownOpened Event
Definition
Important
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Occurs when the drop-down list of the combo box opens.
public:
event EventHandler ^ DropDownOpened;public event EventHandler DropDownOpened;member this.DropDownOpened : EventHandler Public Custom Event DropDownOpened As EventHandler Event Type
Examples
The following example shows how to assign event handlers and handle the DropDownOpened and DropDownClosed events.
<ComboBox Name="cb" StaysOpenOnEdit="true" IsEditable="true" DropDownOpened="OnDropDownOpened"
DropDownClosed="OnDropDownClosed">
void OnDropDownOpened(object sender, EventArgs e)
{
if (cb.IsDropDownOpen)
{
cb.Text = "Combo box opened";
}
}
void OnDropDownClosed(object sender, EventArgs e)
{
if (!cb.IsDropDownOpen)
{
cb.Text = "Combo box closed";
}
}
Private Sub OnDropDownOpened(ByVal Sender As Object, ByVal e As EventArgs)
If (cb.IsDropDownOpen = True) Then
cb.Text = "Combo box opened"
End If
End Sub
Private Sub OnDropDownClosed(ByVal Sender As Object, ByVal e As EventArgs)
If (cb.IsDropDownOpen = False) Then
cb.Text = "Combo box closed"
End If
End Sub
Applies to
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