TimePicker.SelectedTimeChanged 事件

定義

命名空間:

Windows.UI.Xaml.Controls

發生於 SelectedTime 屬性的值變更時。

// 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" />

事件類型

TypedEventHandler<TimePicker,TimePickerSelectedValueChangedEventArgs>

Windows 需求

裝置系列	Windows 10, version 1809 (已於 10.0.17763.0 引進)
API contract	Windows.Foundation.UniversalApiContract (已於 v7.0 引進)

範例

如需使用 和 來更新單 DateTime 一值的範例，請參閱行事曆、日期和時間控制項 - 同時使用日期選擇器和時間選擇器。 TimePickerDatePicker

<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);
    }
}