C# 发布 Web API

Question

我想在 C# 中执行 HTTP Post 请求，但我不知道该怎么做。我在网上尝试了很多方法，但都抛出了不同的错误。

本质上我想对这个 api 做一个 post 请求:

http://localhost:57772/api/user/

我可以在 postman 中使用:

http://localhost:57772/api/user/?name=Paul

如有任何帮助，我们将不胜感激。这是我的代码

HttpClient client = new HttpClient();
var values = new Dictionary<string, string>
             {
                 { "name", $"{activity.From.Name}" },
             };
var content = new FormUrlEncodedContent(values);
var response = await client.PostAsync("http://localhost:57772/api/user/", content);

错误是:

405 method not allowed

这是我的 Controller :

    public IEnumerable<User> GetAllUsers()
    {
        return users;
    }

    public IHttpActionResult GetUsers(string name)
    {
        var user = users.FirstOrDefault((n) => n.name == name);
        if (user == null)
        {
            return NotFound();
        }
        return Ok(user);
    }

    public IHttpActionResult PostNewUser(string name)
    {
        if (!ModelState.IsValid)
            return BadRequest("Invalid data.");
        var user = new User { name = name, message = "Hello3" };

        var context = GlobalHost.ConnectionManager.GetHubContext<ChatHub>();
        context.Clients.All.broadcastMessage(name, "stop the chat");

        return Ok(user);
    }
}

Answer 1

using (WebClient client = new WebClient())
{
     byte[] response = client.UploadData(“http://localhost:57772/api/user”, new NameValueCollection()
     {
           {“name”, “Paul”}
     });
}