Try this it should work for you.

In Default.aspx.cs

XmlDocument xmlDoc = new XmlDocument();
  xmlDoc.Load(Request.MapPath("~/App_Data/FoothBall.xml"));
  XmlNodeList nodList = xmlDoc.SelectNodes("//sport/group[@status='Open']");
                       
   DataList1.DataSource = nodList;
   DataList1.DataBind();