internal override void OnEditCanceled(DataGridItemEventArgs e)
{
object item = e.Item;
DataGridPageManagerBase pageManager = this.RootGroup.GetVirtualPageManager();
// Compare cached values with current values. If they are the same, we can clear the old values which in turn will
// make the item non dirty.
bool clearIsDirty = true;
VirtualizedItemValueCollection cachedValues = pageManager.GetCachedValuesForItem(item);
Debug.Assert(cachedValues != null);
DataGridItemPropertyCollection itemProperties = this.ItemProperties;
foreach (DataGridItemPropertyBase itemProperty in itemProperties)
{
object currentValue = itemProperty.GetValue(item);
if (!(object.Equals(currentValue, cachedValues[itemProperty.Name])))
{
clearIsDirty = false;
break;
}
}
if (clearIsDirty)
{
pageManager.ClearCachedValuesForItem(item);
}
base.OnEditCanceled(e);
}