public override bool CanDropNode(object dataObject, DragOperation operation, DropPosition pos)
{
object parent1 = CurrentNode.GetParentDataItem(typeof(Extension), false);
if (parent1 == null)
{
parent1 = CurrentNode.GetParentDataItem(typeof(ExtensionPoint), false);
}
ITreeNavigator nav = CurrentNode.Clone();
if (!nav.MoveToObject(dataObject))
{
return(false);
}
object parent2 = nav.GetParentDataItem(parent1.GetType(), false);
if (parent2 != parent1)
{
return(false);
}
return(true);
}