private void btnSave_Click(object sender, RoutedEventArgs e)
        {
            EntityRelationshipTailDTO dto = new EntityRelationshipTailDTO();
            List <RelationshipDTO>    listRelationships = new List <RelationshipDTO>();
            var relationshipFound = GetCheckedNode(listRelationships);

            if (relationshipFound)
            {
                //var targetEntityID = listRelationships.First().EntityID2;
                //    dto = ConvertRelationshipPath(listRelationships);

                var result = bizEntityRelationshipTail.GetOrCreateEntityRelationshipTailID(EntityID, GetPath(listRelationships));
                if (ItemSelected != null)
                {
                    ItemSelected(this, new EntityRelationshipTailSelectedArg()
                    {
                        EntityRelationshipTailID = result
                    });
                }
                MessageBox.Show("ثبت انجام شد");
            }
        }