Form.Deactivate Event
Definition
Important
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Occurs when the form loses focus and is no longer the active form.
public:
event EventHandler ^ Deactivate;public event EventHandler Deactivate;public event EventHandler? Deactivate;member this.Deactivate : EventHandler Public Custom Event Deactivate As EventHandler Event Type
Examples
The following example demonstrates the use of this member. In the example, an event handler reports on the occurrence of the Deactivate 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 Form named Form1. Then ensure that the event handler is associated with the Deactivate event.
private void Form1_Deactivate(Object sender, EventArgs e) {
MessageBox.Show("You are in the Form.Deactivate event.");
}
Private Sub Form1_Deactivate(sender as Object, e as EventArgs) _
Handles Form1.Deactivate
MessageBox.Show("You are in the Form.Deactivate event.")
End Sub
Remarks
You can use this event to perform tasks such as updating another window in your application with data from the deactivated form.
For more information about handling events, see Handling and Raising Events.
