Form.Deactivate 事件

定義

發生於表單失去焦點且不再是使用中的表單時。Occurs when the form loses focus and is no longer the active form.

public:
 event EventHandler ^ Deactivate;
public event EventHandler Deactivate;
member this.Deactivate : EventHandler 
Public Custom Event Deactivate As EventHandler 

範例

下列範例示範如何使用這個成員。The following example demonstrates the use of this member. 在此範例中,事件處理常式會報告 Deactivate 事件的發生次數。In the example, an event handler reports on the occurrence of the Deactivate event. 此報表可協助您瞭解事件發生的時間,並可協助您進行調試。This report helps you to learn when the event occurs and can assist you in debugging. 若要報告多個事件或經常發生的事件,請考慮以 Console.WriteLine 取代 MessageBox.Show,或將訊息附加到多行 TextBoxTo 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.

若要執行範例程式碼,請將它貼入包含類型為 Form 的實例的專案中(名為 Form1)。To run the example code, paste it into a project that contains an instance of type Form named Form1. 然後確定事件處理常式與 Deactivate 事件相關聯。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

備註

您可以使用這個事件來執行工作,例如在應用程式中使用停用表單的資料來更新另一個視窗。You can use this event to perform tasks such as updating another window in your application with data from the deactivated form.

如需處理事件的詳細資訊,請參閱處理和引發事件For more information about handling events, see Handling and Raising Events.

適用於

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