ToolStripComboBox.DropDown Event
Definition
Important
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Occurs when the drop-down portion of a ToolStripComboBox is shown.
public:
event EventHandler ^ DropDown;public event EventHandler DropDown;public event EventHandler? DropDown;member this.DropDown : EventHandler Public Custom Event DropDown As EventHandler Event Type
Examples
The following code example demonstrates the use of this member. In the example, an event handler reports on the occurrence of the DropDown event. This report helps you to learn when the event occurs and can assist you in debugging. To report on multiple events or on events that occur frequently, consider replacing MessageBox.Show with Console.WriteLine or appending the message to a multiline TextBox.
To run the example code, paste it into a project that contains an instance of type ToolStripComboBox named ToolStripComboBox1. Then ensure that the event handler is associated with the DropDown event.
private void ToolStripComboBox1_DropDown(Object sender, EventArgs e) {
MessageBox.Show("You are in the ToolStripComboBox.DropDown event.");
}
Private Sub ToolStripComboBox1_DropDown(sender as Object, e as EventArgs) _
Handles ToolStripComboBox1.DropDown
MessageBox.Show("You are in the ToolStripComboBox.DropDown event.")
End Sub
Remarks
For more information about event-handler delegates, see Handling and Raising Events.
