public SqlHierarchyId GetReparentedValue(SqlHierarchyId oldRoot, SqlHierarchyId newRoot)
{
if (!IsNull && !oldRoot.IsNull && !newRoot.IsNull)
{
if (!IsDescendantOf(oldRoot))
{
throw new HierarchyIdException("Instance is not a descendant of 'oldRoot'");
}
return(new SqlHierarchyId(_imp.GetReparentedValue(oldRoot._imp, newRoot._imp)));
}
return(Null);
}