C#,Json相关的工具类

分享一个Json的常用类，通过Json传输，个人认为Json可以跨平台，传输效率高。
需要借助一个工具Newtonsoft.Json.dll。Function:
using Newtonsoft.Json;

1. —————DataTable to Json String————————-
   public static string DataTableToJson(DataTable dt)
   {
   List<Dictionary<string, object>> lst = new List<Dictionary<string, object>>();
   foreach (DataRow drRow in dt.Rows)
   {
   Dictionary<string, object> dic = new Dictionary<string, object>();
   foreach (DataColumn column in dt.Columns)
   {
   dic.Add(column.ColumnName, drRow[column.ColumnName]);
   }
   lst.Add(dic);
   }
   JsonSerializerSettings setting = new JsonSerializerSettings();
   setting.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
   string strJson = JsonConvert.SerializeObject(lst, Formatting.None, setting);
   return strJson;
   }
2. —————List to Json String————————-
   public static string ListToJson(List list)
   {
   JsonSerializerSettings setting = new JsonSerializerSettings();
   setting.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
   string strJson = JsonConvert.SerializeObject(list, Formatting.None, setting);
   return strJson;
   }
3. —————Dictionary to Json String————————-
   public static string DictToJson(Dictionary<string, object> dict)
   {
   JsonSerializerSettings setting = new JsonSerializerSettings();
   setting.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
   string strJson = JsonConvert.SerializeObject(dict, Formatting.None, setting);
   return strJson;
   }