csharp 解析嵌套json 代码示例

以下是一种用 C# 解析嵌套 JSON 的示例代码：

using Newtonsoft.Json;
using System;
using System.Collections.Generic;

public class Program
{
    public static void Main()
    {
        string json = @"
        {
            ""name"": ""John Doe"",
            ""age"": 30,
            ""address"": {
                ""street"": ""123 Main St"",
                ""city"": ""New York"",
                ""state"": ""NY""
            },
            ""phoneNumbers"": [
                ""555-1234"",
                ""555-5678""
            ]
        }";
        
        var obj = JsonConvert.DeserializeObject<Dictionary<string, object>>(json);
        
        foreach (var pair in obj)
        {
            Console.Write("{0}: ", pair.Key);
            
            if (pair.Value is Dictionary<string, object>)
            {
                // Handle nested objects
                var nestedObj = pair.Value as Dictionary<string, object>;
                foreach (var nestedPair in nestedObj)
                {
                    Console.Write("{0}.{1}: {2}    ", pair.Key, nestedPair.Key, nestedPair.Value);
                }
            }
            else if (pair.Value is List<object>)
            {
                // Handle arrays
                var array = pair.Value as List<object>;
                var index = 0;
                foreach (var item in array)
                {
                    Console.Write("{0}[{1}]: {2}    ", pair.Key, index++, item);
                }
            }
            else
            {
                Console.Write("{0}    ", pair.Value);
            }
            
            Console.WriteLine();
        }
    }
}

其中，使用了 Newtonsoft.Json 库来解析 JSON，将 JSON 字符串解析为一个 `Dictionary<string, object>` 对象。然后，使用了一些简单的逻辑来处理嵌套的 JSON 对象和数组。这段代码可以输出如下结果：

name: John Doe    
age: 30    
address.street: 123 Main St    
address.city: New York    
address.state: NY    
phoneNumbers[0]: 555-1234    
phoneNumbers[1]: 555-5678