protected void btnAdd_Click(object sender, EventArgs e) { ProductManager manager = new ProductManager(this); manager.InsertProductPart( new ProductPart { Name = txtProductPart.Text, ParentId = RadTreeView1.SelectedNode != null ? Convert.ToInt32(RadTreeView1.SelectedNode.Value) : (int?)null, ModifiedDate = DateTime.Now, //CompanyId = (int)Company.MatrixId, Quantity = Convert.ToInt16(txtQuantity.Text) }); BindTree(); }