DateTimePicker.FormatChanged DateTimePicker.FormatChanged DateTimePicker.FormatChanged DateTimePicker.FormatChanged Event


發生於 Format 屬性值變更時。Occurs when the Format property value has changed.

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


下列程式碼範例示範如何使用這個成員。The following code example demonstrates the use of this member. 在此範例中, 事件處理常式會報告FormatChanged事件的發生次數。In the example, an event handler reports on the occurrence of the FormatChanged 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MessageBox.ShowConsole.WriteLine取代為, 或將訊息附加TextBox至多行。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.

若要執行範例程式碼, 請將它貼入包含名為DateTimePicker DateTimePicker1之類型實例的專案中。To run the example code, paste it into a project that contains an instance of type DateTimePicker named DateTimePicker1. 然後確定事件處理常式與FormatChanged事件相關聯。Then ensure that the event handler is associated with the FormatChanged event.

private void DateTimePicker1_FormatChanged(Object sender, EventArgs e) {

   MessageBox.Show("You are in the DateTimePicker.FormatChanged event.");

Private Sub DateTimePicker1_FormatChanged(sender as Object, e as EventArgs) _ 
     Handles DateTimePicker1.FormatChanged

   MessageBox.Show("You are in the DateTimePicker.FormatChanged event.")

End Sub


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.