在两端使用C#将对象列表发送到web api方法- JSON为空。

using System;
using System.Collections.Generic;
using System.Net.Http;
using System.Text;
using Newtonsoft.Json;

public class MyObject
{
    [JsonProperty("name")]
    public string Name { get; set; }

    [JsonProperty("age")]
    public int Age { get; set; }
}

public class Program
{
    private static readonly HttpClient client = new HttpClient();

    public static async Task Main()
    {
        var objects = new List<MyObject>
        {
            new MyObject { Name = "Alice", Age = 30 },
            new MyObject { Name = "Bob", Age = 25 }
        };

        var json = JsonConvert.SerializeObject(objects);
        Console.WriteLine("Serialized JSON: " + json); // 确保JSON不是空的

        var content = new StringContent(json, Encoding.UTF8, "application/json");
        var response = await client.PostAsync("http://yourapi.com/endpoint", content);

        if (response.IsSuccessStatusCode)
        {
            Console.WriteLine("Success!");
        }
        else
        {
            Console.WriteLine("Failed: " + response.ReasonPhrase);
        }
    }
}

using System.Collections.Generic;
using Microsoft.AspNetCore.Mvc;

[ApiController]
[Route("[controller]")]
public class MyController : ControllerBase
{
    [HttpPost]
    public IActionResult Post([FromBody] List<MyObject> objects)
    {
        if (objects == null || objects.Count == 0)
        {
            return BadRequest("The JSON payload is empty.");
        }

        // 处理objects...
        return Ok("Received objects.");
    }
}