C＃從MVC控制器參數調用WebApi方法始終為null

Question

我遇到一個我正在調用WebApi POST方法的MVC控制器的情況。 我正在傳遞DTO作為參數... WebApi方法已命中，但參數為null。 我想念什么？

謝謝！ MVC控制器：

     [Authorize]
    public async Task<ActionResult> Index()
    {
        Permissions service = new Permissions();
        ViewBag.Title = "Deployment Manager";

        string uri = System.Web.Configuration.WebConfigurationManager.AppSettings["ApiRestfulUrl"] + "/Permissions";
        using (var client = new HttpClient())
        {
            var permissions = new PermissionsDTO() { UserName = "rherhut" };
            var response = await client.PostAsJsonAsync(uri, permissions);
            if (response.IsSuccessStatusCode)
            {
                // Get response data how??
            }

        }

        return View();
    }

WebAPI POST方法：

     public HttpResponseMessage Post(HttpRequestMessage request, [FromBody]PermissionsDTO permissions)
    {
         var data = repository.HasAdminRights(permissions.UserName); // permissions.UserName is null
        var response = new ApiResponseCreator<PermissionsDTO>();
        return response.FormatReturnData(request, data);
    }

Answer 1

我通過用“ Serialize”屬性裝飾dto類來解決此問題，並且出於某些原因，此方法可行。