(C#) Google Firebase HTTP post请求读/写数据，返回405 :不允许使用方法。

using System;
using System.Net.Http;
using System.Threading.Tasks;

class Program
{
    static async Task Main(string[] args)
    {
        var url = "https://your-firebase-project.firebaseio.com/your-collection.json";
        var data = "{\"key\": \"value\"}";

        using (var client = new HttpClient())
        {
            var content = new StringContent(data);
            content.Headers.ContentType.MediaType = "application/json";

            var response = await client.PostAsync(url, content);

            if (response.IsSuccessStatusCode)
            {
                var result = await response.Content.ReadAsStringAsync();
                Console.WriteLine("Data written successfully: " + result);
            }
            else
            {
                Console.WriteLine("Failed to write data. Status code: " + response.StatusCode);
            }
        }
    }
}