将DataTable转化为json对象

private  string DataTableTojson(DataTable dt)
        {
             List> list= new List>();
              foreach (DataRow rows  in dt.Rows)
             {
                 Dictionary dict =  new Dictionary();
                  foreach (DataColumn col  in dt.Columns)
                 {
                     dict[col.ColumnName] = rows[col];
                 }
                 list.Add(dict);
             }
             JavaScriptSerializer jss =  new JavaScriptSerializer();

              return jss.Serialize(list);
        }

 推荐博文：http://www.cnblogs.com/starksoft/p/3944088.html