private static void minValueChangedCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
DateTimeUpDown DateTimeUpDown = ((DateTimeUpDown)d);
DateTimeUpDown.CoerceValue(DateTimeUpDown.MaxValueProperty);
DateTimeUpDown.CoerceValue(DateTimeUpDown.ValueProperty);
}
private static object coerceFormatCallback(DependencyObject d, object value)
{
DateTimeUpDown DateTimeUpDown = ((DateTimeUpDown)d);
// check format is valid
return(value);
}
private static void valueChangedCallback(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
DateTimeUpDown dt = (DateTimeUpDown)d;
ValueChangedEventArgs ea =
new ValueChangedEventArgs(DateTimeUpDown.ValueChangedEvent, d, (DateTime?)e.OldValue, (DateTime?)e.NewValue);
dt.RaiseEvent(ea);
//if (ea.Handled) DateTimeUpDown.Value = (DateTime)e.OldValue;
//else
if (e.NewValue == null)
{
dt.PART_TextBox.Text = string.Empty;
}
else
{
dt.PART_TextBox.Text = ((DateTime)e.NewValue).ToString(dt.Format);
}
}
private static object coerceValueCallback(DependencyObject d, object value)
{
DateTimeUpDown dt = (DateTimeUpDown)d;
if (value != null)
{
DateTime val = (DateTime)value;
if (val > dt.MinValue && val < dt.MaxValue)
{
return(val);
}
else if (val < dt.MinValue)
{
return(dt.MinValue);
}
else if (val < dt.MaxValue)
{
return(dt.MaxValue);
}
}
return(null);
}