C#httpclient

 后台数据接口：

 [HttpPost]
        public Response<List<Schedule>> LoadSchedule([FromForm]QueryScheduleOneListReq query)
        {
            var result = new Response<List<Schedule>>();
            try
            {
                result.Result = _scheduleApp.Load(query);
            }
            catch (Exception ex)
            {

                result.Code = 500;
                result.Message = ex.InnerException?.Message ?? ex.Message;
            }
            return result;

        }

前台请求格式：

 public static async Task<string> PostAsync(string url,string data,Dictionary<string,string> header=null,bool Gzip = false)
        {
            try
            {
                HttpClient client = new HttpClient(new HttpClientHandler() { UseCookies = false });
                HttpContent content = new StringContent(data);
                content.Headers.ContentType=new System.Net.Http.Headers.MediaTypeHeaderValue("multipart/form-data");
                if (header != null)
                {
                    client.DefaultRequestHeaders.Clear();
                    foreach (var item in header)
                    {
                        client.DefaultRequestHeaders.Add(item.Key, item.Value);
                    }
                }
                HttpResponseMessage response = await client.PostAsync(url, content);
                response.EnsureSuccessStatusCode();
                string responseBody = "";
                if (Gzip)
                {
                    GZipInputStream inputStream = new GZipInputStream(await response.Content.ReadAsStreamAsync());
                    responseBody = new StreamReader(inputStream).ReadToEnd();
                }
                else
                {
                    responseBody = await response.Content.ReadAsStringAsync();
                }
                return responseBody;
            }
            catch (Exception ex)
            {

                throw;
            }
            return null;
            

        }

 第一个问题请求的时候会抛出异常，把 content.Headers.ContentType=new System.Net.Http.Headers.MediaTypeHeaderValue("multipart/form-data");这行代码去掉，异常就没有了。

第二个问题就是前台的数据提交不上去