TimePicker.TimeChanged 事件

定義

命名空間:

Microsoft.UI.Xaml.Controls

發生於 Time 屬性的值變更時。

// Register
event_token TimeChanged(EventHandler<TimePickerValueChangedEventArgs> const& handler) const;

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

// Revoke with event_revoker
TimePicker::TimeChanged_revoker TimeChanged(auto_revoke_t, EventHandler<TimePickerValueChangedEventArgs> const& handler) const;

public event System.EventHandler<TimePickerValueChangedEventArgs> TimeChanged;

function onTimeChanged(eventArgs) { /* Your code */ }
timePicker.addEventListener("timechanged", onTimeChanged);
timePicker.removeEventListener("timechanged", onTimeChanged);
- or -
timePicker.ontimechanged = onTimeChanged;

Public Custom Event TimeChanged As EventHandler(Of TimePickerValueChangedEventArgs) 

<TimePicker TimeChanged="eventhandler" />

事件類型

EventHandler<TimePickerValueChangedEventArgs>

EventHandler<TimePickerValueChangedEventArgs>

範例

<TimePicker TimeChanged="TimePicker_TimeChanged"/>
<TextBlock x:Name="resultText"/>

private void TimePicker_TimeChanged(object sender, TimePickerValueChangedEventArgs e)
{
    DateTime myTime = DateTime.Today + e.NewTime;
    var timeDiff = e.NewTime - e.OldTime;
    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);
    }
}

另請參閱

• Time
• SelectedTime
• SelectedTimeChanged