C# dynamic json

对应普通对象，写个扩展方法，ToJson蛮方便。

但是 dynamic 类型就不行了，因为是运行时解析，只能转换为强类型 IDictionary<string, object> 才可以。

配置文件（Firebird）：

 <configuration>
   <startup>
     <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
   </startup>

   <connectionStrings>
     <add name="fb" connectionString="Server=localhost;User=SYSDBA;Password=1234;Database=wms;Dialect=3;ServerType=0;"/>
   </connectionStrings>

   <system.data>
     <DbProviderFactories>
       <remove invariant="FirebirdSql.Data.FirebirdClient" />
       <add name="FirebirdClient Data Provider" invariant="FirebirdSql.Data.FirebirdClient"
            description=".NET Framework Data Provider for Firebird"
            type="FirebirdSql.Data.FirebirdClient.FirebirdClientFactory, FirebirdSql.Data.FirebirdClient" />
     </DbProviderFactories>
   </system.data>
 </configuration>

转换工具：

     static class JsonHelper
     {
         public static string ToJson(this object obj)
         {
             var str = JsonConvert.SerializeObject(obj, Formatting.Indented, new JsonSerializerSettings
             {
                 NullValueHandling = NullValueHandling.Ignore,
                 DateFormatString = "yyyy-MM-dd HH:mm:ss",
                 ReferenceLoopHandling = ReferenceLoopHandling.Ignore//循环引用
             });
             return str;
         }

         public static T FromJson<T>(this string json) where T : class
         {
             return JsonConvert.DeserializeObject(json, typeof(T), new IsoDateTimeConverter
             {
                 DateTimeFormat = "yyyy-MM-dd HH:mm:ss"
             }) as T;
         }
     }

Demo：

             var connectionString = ConfigurationManager.ConnectionStrings["fb"].ConnectionString;
             using (var db = new DbContext().ConnectionString(
                 connectionString,
                 new DB2Provider(),
                 FirebirdSql.Data.FirebirdClient.FirebirdClientFactory.Instance))
             {
                 List<dynamic> users = db.Sql(@"SELECT
   M_USER.ID,
   M_USER.CODE,
   M_USER.PWD,
   M_USER.LABEL,
   M_USER.CRE_TIME
 FROM
   M_USER
 where id > @0").Parameters().QueryMany<dynamic>();

                 foreach (var user in users)
                 {
                     var tem = user as IDictionary<string, object>;
                     Console.WriteLine(tem.ToJson());
                 }
             }

             Console.ReadLine();

效果：