读取并应用*.json文件

 var nationality = HttpContext.Current.Server.MapPath("~/Config/nationality.json");
 string[] nationArr;
 using(StreamReader r=new StreamReader(nationality, Encoding.Default))
 {
  string json = r.ReadToEnd();
  var nation = json.ToObject<Nationality>();
  nationArr = nation.Data.Select(n => n.Name).ToArray();
 }