转换类型'System.Dynamic.DynamicObject到System.Collections.IEnumerable [英] Convert type 'System.Dynamic.DynamicObject to System.Collections.IEnumerable

问题描述

我成功地使用的JavaScriptSerializer在MVC3中动态对象反序列化一个JSON字符串。我想不通的是如何将它转换的东西，我可以枚举。下面的代码行的foreach是我最新的attemt但有错误：无法隐式转换类型'System.Dynamic.DynamicObject'到'System.Collections.IEnumerable我怎么能转换或投，这样我可以通过字典遍历？

 公共动态GetEntities（字符串的entityName，串entityField）
 {
无功序列化=新的JavaScriptSerializer（ ）; 
 serializer.RegisterConverters（新[] {新MyProject.Extensions.JsonExtension.DynamicJsonConverter（）}）; 
动态数据= serializer.Deserialize（JSON的typeof（对象））; 
返回数据; 
} 
 
 
的foreach（在GetEntities VAR作者（作家，姓氏））
  

解决方案

DynamicObject从IDictionary的继承，所以你可以将它转换为IDictionary的。

 公开的IDictionary<字符串对象> GetEntities（字符串的entityName，串entityField）
 {
无功序列化=新的JavaScriptSerializer（）; 
 serializer.RegisterConverters（新[] {新MyProject.Extensions.JsonExtension.DynamicJsonConverter（）}）; 
动态数据= serializer.Deserialize（JSON的typeof（对象））; 
返回数据的IDictionary<字符串对象> ;; 
} 
 
 
 
 
的foreach（在GetEntities VAR作者（作家，姓氏））
  

I'm successfully using the JavaScriptSerializer in MVC3 to de-serialize a json string in to a dynamic object. What I can't figure out is how to cast it to something I can enumerate over. The foreach line of code below is my latest attemt but it errors with: "Cannot implicitly convert type 'System.Dynamic.DynamicObject' to 'System.Collections.IEnumerable'. How can I convert or cast so that I can iterate through the dictionary?

 public dynamic GetEntities(string entityName, string entityField)
        {
           var serializer = new JavaScriptSerializer();
            serializer.RegisterConverters(new[] { new                        MyProject.Extensions.JsonExtension.DynamicJsonConverter() });
           dynamic data = serializer.Deserialize(json, typeof(object));
           return data;
        }


 foreach (var author in GetEntities("author", "lastname"))

解决方案

DynamicObject is inherited from IDictionary, so you can cast it to IDictionary.

public IDictionary<string, object> GetEntities(string entityName, string entityField)
    {
       var serializer = new JavaScriptSerializer();
        serializer.RegisterConverters(new[] { new MyProject.Extensions.JsonExtension.DynamicJsonConverter() });
       dynamic data = serializer.Deserialize(json, typeof(object));
       return data as IDictionary<string, object>;
    }




foreach (var author in GetEntities("author", "lastname"))

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