/// <summary>
/// Called when a Read-Only dependency property is changed
/// </summary>
/// <param name="depObj">The dependency object</param>
/// <param name="e">The event arguments</param>
private static void OnReadOnlyPropertyChanged(DependencyObject depObj, DependencyPropertyChangedEventArgs e)
{
Frame frame = depObj as Frame;
if (frame != null && !frame.AreHandlersSuspended())
{
frame.SetValueNoCallback(e.Property, e.OldValue);
throw new InvalidOperationException(
string.Format(
CultureInfo.InvariantCulture,
Resource.UnderlyingPropertyIsReadOnly,
e.Property.ToString()));
}
}
private static void CacheSizePropertyChanged(DependencyObject depObj, DependencyPropertyChangedEventArgs e)
{
Frame frame = (Frame)depObj;
if (!frame.AreHandlersSuspended())
{
int newCacheSize = (int)e.NewValue;
if (newCacheSize < 0)
{
frame.SetValueNoCallback(CacheSizeProperty, e.OldValue);
throw new InvalidOperationException(
string.Format(CultureInfo.InvariantCulture,
Resource.Frame_CacheSizeMustBeGreaterThanOrEqualToZero,
"CacheSize"));
}
if (frame._navigationService != null && frame._navigationService.Cache != null)
{
frame._navigationService.Cache.ChangeCacheSize(newCacheSize);
}
}
}