private void AddHierarchyToolStripButton_Click(object sender, EventArgs e)
        {
            var entityWithParent = InterfaceHandler.SetHierarchyParentByTreeView(HierarchyTreeView);
            var viewForm         = new HierarchyView(entityWithParent);

            viewForm.Show();
        }
        private void EditHierarchytoolStripButton_Click(object sender, EventArgs e)
        {
            var entity = InterfaceHandler.SetHierarchyEntityByTreeView(HierarchyTreeView);

            if (entity != null)
            {
                var viewForm = new HierarchyView(entity);
                viewForm.Show();
            }
        }