TimePicker.TimeChanged 事件
定义
重要
一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。 对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。
在 Time 属性的值更改后发生。
// 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" />
事件类型
示例
<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);
}
}