TimePicker.SelectedTimeChanged Evento

Definizione

Spazio dei nomi:

Windows.UI.Xaml.Controls

Si verifica in seguito alla modifica del valore della proprietà SelectedTime.

// Register
event_token SelectedTimeChanged(TypedEventHandler<TimePicker, TimePickerSelectedValueChangedEventArgs const&> const& handler) const;

// Revoke with event_token
void SelectedTimeChanged(event_token const* cookie) const;

// Revoke with event_revoker
TimePicker::SelectedTimeChanged_revoker SelectedTimeChanged(auto_revoke_t, TypedEventHandler<TimePicker, TimePickerSelectedValueChangedEventArgs const&> const& handler) const;

public event TypedEventHandler<TimePicker,TimePickerSelectedValueChangedEventArgs> SelectedTimeChanged;

function onSelectedTimeChanged(eventArgs) { /* Your code */ }
timePicker.addEventListener("selectedtimechanged", onSelectedTimeChanged);
timePicker.removeEventListener("selectedtimechanged", onSelectedTimeChanged);
- or -
timePicker.onselectedtimechanged = onSelectedTimeChanged;

Public Custom Event SelectedTimeChanged As TypedEventHandler(Of TimePicker, TimePickerSelectedValueChangedEventArgs) 

<TimePicker SelectedTimeChanged="eventhandler" />

Tipo evento

TypedEventHandler<TimePicker,TimePickerSelectedValueChangedEventArgs>

Requisiti Windows

Famiglia di dispositivi	Windows 10, version 1809 (è stato introdotto in 10.0.17763.0)
API contract	Windows.Foundation.UniversalApiContract (è stato introdotto in v7.0)

Esempio

Per un esempio di uso di un DatePicker oggetto e TimePicker insieme per aggiornare un singolo DateTime valore, vedere Calendario, data e ora controlli : usare una selezione data e un selettore ora insieme.

<TimePicker SelectedTimeChanged="TimePicker_SelectedTimeChanged"/>
<TextBlock x:Name="resultText"/>

private void TimePicker_SelectedTimeChanged(TimePicker sender, TimePickerSelectedValueChangedEventArgs args)
{
    DateTime myTime = DateTime.Today + (TimeSpan)args.NewTime;
    if (DateTime.Now >= myTime)
    {
        resultText.Text = "Your selected time has already past.";
    }
    else
    {
        string hrs = (myTime - DateTime.Now).Hours.ToString();
        string mins = (myTime - DateTime.Now).Minutes.ToString();
        resultText.Text = string.Format("Your selected time is {0} hours, {1} minutes from now.", hrs, mins);
    }
}