TimePicker.SelectedTimeChanged 事件
定义
重要
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在 SelectedTime 属性的值更改后发生。
// 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" />
事件类型
示例
有关结合使用 DatePicker 和 TimePicker 来更新单个 DateTime 值的示例，请查看日历、日期和时间控件 - 将日期选取器和时间选取器结合使用。
<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);
}
}