private static void HideDefinitionAndCacheLength(this DefinitionBase definition, WeakKeyDictionary <DefinitionBase, GridLength> gridLengthsCache)
{
var currentLength = definition.GetLength();
switch (currentLength.GridUnitType)
{
case GridUnitType.Auto:
case GridUnitType.Star:
// If the current unit is Auto or Star, we don't need to update the current or cached value.
break;
case GridUnitType.Pixel:
// If current unit is Pixel, we need to set length to zero to hide the definition and update the cached value.
gridLengthsCache[definition] = currentLength;
definition.SetLength(new GridLength(0));
break;
}
}