I have a xml file with a list of cities, and I wrote an c# code to get it into a drop down list.

Here is my code:

 protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                LoadXML();
            }
        }

        public void LoadXML()
        {     
            string cidadeXml = Server.MapPath("~/cidades.xml");
            DataSet dsCidade = new DataSet();

            dsCidade.ReadXml(cidadeXml);
            cidadeDDL.DataSource = dsCidade;
            cidadeDDL.DataTextField = "NOME";
            cidadeDDL.DataValueField = "NOME";
            cidadeDDL.DataBind();
        }

I want to make it works in my umbraco project. Where can I insert my xml file to be read by a macro.

I have a macro with this code in my page, but it's returning a erro message: