TimePicker

[egalley]

When I clear the value of a TimePicker field, SelectedTime is not set to null.
The field is empty but does not become a required field.

Thanks for help.

[punker76]

@egalley Which MahApps version are you using? How are you bind to the property?

[egalley]

I use the lastest version available for nugets : 1.6.5.1

I added this to the DateExamples.xaml of the Demo

            <Controls:TimePicker Width="200"
                        Margin="0 10 0 0"
                        HorizontalAlignment="Center"
                        Controls:TextBoxHelper.AutoWatermark="True"
                        IsClockVisible="False" PickerVisibility="HourMinute" SelectedTimeFormat="Short" 
                        SelectedTime="{Binding TimePickerDate, ValidatesOnDataErrors=True, UpdateSourceTrigger=PropertyChanged, NotifyOnValidationError=True}" />

And this in MainWindowViewModel.cs

    TimeSpan? _timePickerDate;

    [Display(Prompt = "Auto resolved Watermark time")]
    public TimeSpan? TimePickerDate {
        get { return this._timePickerDate; }
        set {
            if (Equals(value, _timePickerDate)) {
                return;
            }

            _timePickerDate = value;
            RaisePropertyChanged("TimePickerDate");
        }
    }

....
public string this[string columnName]
...
if (columnName == "TimePickerDate" && this.TimePickerDate == null) {
return "No time given!";
}