asp.netjson格式怎么转换

在ASP.NET中，可以使用JavaScriptSerializer类来将对象转换为JSON字符串，以及将JSON字符串转换为对象。以下是一个示例代码：

using System;
using System.Web.Script.Serialization;

public class Person
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public class JsonExample
{
    public static void Main()
    {
        Person person = new Person { Name = "John", Age = 30 };

        // 将对象转换为JSON字符串
        JavaScriptSerializer serializer = new JavaScriptSerializer();
        string jsonString = serializer.Serialize(person);
        Console.WriteLine("JSON String: " + jsonString);

        // 将JSON字符串转换为对象
        Person deserializedPerson = serializer.Deserialize(jsonString);
        Console.WriteLine("Deserialized Object: " + serializer.Serialize(deserializedPerson));
    }
}

输出结果：

JSON String: {"Name":"John","Age":30}
Deserialized Object: {"Name":"John","Age":30}

请注意，JavaScriptSerializer类在.NET Framework中可用，但在.NET Core和.NET 5及更高版本中已被弃用。在这些新版本中，可以使用System.Text.Json命名空间中的JsonSerializer类来进行JSON序列化和反序列化。以下是一个使用System.Text.Json的示例代码：

using System;
using System.Text.Json;

public class Person
{
    public string Name { get; set; }
    public int Age { get; set; }
}

public class JsonExample
{
    public static void Main()
    {
        Person person = new Person { Name = "John", Age = 30 };

        // 将对象转换为JSON字符串
        string jsonString = JsonSerializer.Serialize(person);
        Console.WriteLine("JSON String: " + jsonString);

        // 将JSON字符串转换为对象
        Person deserializedPerson = JsonSerializer.Deserialize(jsonString);
        Console.WriteLine("Deserialized Object: " + JsonSerializer.Serialize(deserializedPerson));
    }
}

输出结果与前面的示例相同：

JSON String: {"Name":"John","Age":30}
Deserialized Object: {"Name":"John","Age":30}