private static void OnItemHeightOrWidthPropertyChanged(DependencyObject d,
DependencyPropertyChangedEventArgs e)
{
OffsetPanel source = (OffsetPanel)d;
double value = (double)e.NewValue;
if (source.ignorePropertyChange)
{
source.ignorePropertyChange = false;
return;
}
if (!double.IsNaN(value) && ((value <= 0.0) || double.IsPositiveInfinity(value)))
{
source.ignorePropertyChange = true;
source.SetValue(e.Property, (double)e.OldValue);
throw new ArgumentException("OnItemHeightOrWidthPropertyChanged InvalidValue", "value");
}
source.InvalidateMeasure();
}
private static void OnMaximumColumnsPropertyChanged(DependencyObject d,
DependencyPropertyChangedEventArgs e)
{
OffsetPanel source = (OffsetPanel)d;
int value = (int)e.NewValue;
if (source.ignorePropertyChange)
{
source.ignorePropertyChange = false;
return;
}
if (value < int.MinValue || value > int.MaxValue)
{
source.ignorePropertyChange = true;
source.SetValue(e.Property, (int)e.OldValue);
throw new ArgumentException("OnMaximumColumnsPropertyChanged InvalidValue", "value");
}
source.InvalidateMeasure();
}