动态对象属性名称以数字开头 [英] Dynamic object property name begins with number

问题描述

我有一个动态对象，其属性以数字开头。

I have a dynamic object whose property begins with number. How to access this property?

对于inst：

myResult.123; // this is unvalid

任何帮助将不胜感激。

推荐答案

如果您将ExpandoObject用于动态对象，则可以强制转换为 IDictionary< string，object> 和使用索引器；

If you are using ExpandoObject for your dynamic object, you can cast to IDictionary<string, object> and use an indexer;

dynamic expando = new ExpandoObject();
var dict = (IDictonary<string, object>)expando;
dict["123"] = 2;

许多其他动态对象实现（例如Json.NET中的JObject）提供了类似的功能。

Many other dynamic object implementations (e. g. JObject in Json.NET) provide similar functionality.

以下是JObject的示例：

Here's an example with JObject:

var json = JsonConvert.SerializeObject(new Dictionary<string, object> { { "123", 10 } });
var deserialized = JsonConvert.DeserializeObject<object>(json);

// using the IDictionary interface
var ten = ((IDictionary<string, JToken>)deserialized)["123"].Value<JValue>().Value;
Console.WriteLine(ten.GetType() + " " + ten); // System.Int64 10

// using dynamic
dynamic d = deserialized;
Console.WriteLine(d["123"].Value.GetType() + " " + d["123"].Value); // System.Int64 10

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