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）：

 1 <configuration>
 2   <startup>
 3     <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
 4   </startup>
 5 
 6   <connectionStrings>
 7     <add name="fb" connectionString="Server=localhost;User=SYSDBA;Password=1234;Database=wms;Dialect=3;ServerType=0;"/>
 8   </connectionStrings>
 9   
10   <system.data>
11     <DbProviderFactories>
12       <remove invariant="FirebirdSql.Data.FirebirdClient" />
13       <add name="FirebirdClient Data Provider" invariant="FirebirdSql.Data.FirebirdClient"
14            description=".NET Framework Data Provider for Firebird"
15            type="FirebirdSql.Data.FirebirdClient.FirebirdClientFactory, FirebirdSql.Data.FirebirdClient" />
16     </DbProviderFactories>
17   </system.data>
18 </configuration>

转换工具：

 1     static class JsonHelper
 2     {
 3         public static string ToJson(this object obj)
 4         {
 5             var str = JsonConvert.SerializeObject(obj, Formatting.Indented, new JsonSerializerSettings
 6             {
 7                 NullValueHandling = NullValueHandling.Ignore,
 8                 DateFormatString = "yyyy-MM-dd HH:mm:ss",
 9                 ReferenceLoopHandling = ReferenceLoopHandling.Ignore//循环引用
10             });
11             return str;
12         }
13 
14         public static T FromJson<T>(this string json) where T : class
15         {
16             return JsonConvert.DeserializeObject(json, typeof(T), new IsoDateTimeConverter
17             {
18                 DateTimeFormat = "yyyy-MM-dd HH:mm:ss"
19             }) as T;
20         }
21     }

Demo：

 1             var connectionString = ConfigurationManager.ConnectionStrings["fb"].ConnectionString;
 2             using (var db = new DbContext().ConnectionString(
 3                 connectionString, 
 4                 new DB2Provider(), 
 5                 FirebirdSql.Data.FirebirdClient.FirebirdClientFactory.Instance))
 6             {
 7                 List<dynamic> users = db.Sql(@"SELECT 
 8   M_USER.ID,
 9   M_USER.CODE,
10   M_USER.PWD,
11   M_USER.LABEL,
12   M_USER.CRE_TIME
13 FROM
14   M_USER
15 where id > @0").Parameters(20).QueryMany<dynamic>();
16 
17                 foreach (var user in users)
18                 {
19                     var tem = user as IDictionary<string, object>;
20                     Console.WriteLine(tem.ToJson());
21                 }
22             }
23 
24             Console.ReadLine();

效果：