c# - 无法在 C# 中使用 httpclient 获取 header "Content-Disposition"

Question

场景:
首先，请考虑我使用的是 HttpClient 类，而不是 WebRequest，我知道这里有很多相关问题，但所有答案都是针对 WebRequest 的。

我制作了一个 Web Api 应用程序，它以这种方式设置了以下 header ，以便下载 .txt 文件:

resp.Content = new StringContent(result, System.Text.Encoding.UTF8, "text/plain");
resp.Content.Headers.ContentDisposition = new System.Net.Http.Headers.ContentDispositionHeaderValue("attachment")
{
    FileName = _datacontext.GetAppConfig("814FileNameHeader") + DateTime.Now.ToString("yyyyMMdd") + ".txt"
};
resp.Content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");  

在我从其他应用程序创建一个 HttpClient 以连接到此方法之后。
一切正常，检索 200 和文件的内容。但是我无法获取标题以读取文件名。

所做的尝试:

使用 REST 客户端我可以读取以下 header 属性:

Content-Disposition: attachment; filename=814Entes_PG_20160114.txt

从代码中我可以调试它，我发现 header 在“invalidHeaders”中，但我无法达到该值:

问题:

我怎样才能设置这个并毫无疑问地从客户那里得到？

更新:

这些是我获取标题的尝试:原文:

                using (var httpClient = new HttpClient())
            {
                httpClient.BaseAddress = new Uri(uri);
                string authentication = string.Concat(authenticationArgs[0], ":", authenticationArgs[1]);
                httpClient.DefaultRequestHeaders.TryAddWithoutValidation("Authorization", "Basic " + Base64Encode(authentication));
                httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
                HttpRequestMessage req = new HttpRequestMessage(HttpMethod.Post, "Report/" + type);
                req.Content = new StringContent("");
                HttpResponseMessage response = await httpClient.SendAsync(req);
                Console.WriteLine(response.StatusCode);
                if (response.IsSuccessStatusCode)
                {
                    string stream = response.Content.ReadAsStringAsync().Result;
                    Console.Write("Respuesta servicio: " + stream);
                    Console.WriteLine(stream);

                  string cp =  response.Headers.GetValues("Content-Disposition").ToString();
                }

我尝试进行一些 SO 调查的第二个:

        using (var httpClient = new HttpClient())
        {
            httpClient.BaseAddress = new Uri(uri);
            string authentication = string.Concat(authenticationArgs[0], ":", authenticationArgs[1]);
            httpClient.DefaultRequestHeaders.TryAddWithoutValidation("Authorization", "Basic " + Base64Encode(authentication));
            httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
            HttpRequestMessage req = new HttpRequestMessage(HttpMethod.Post, "Report/" + type);
            req.Content = new StringContent("");
            HttpResponseMessage response = await httpClient.SendAsync(req);
            Console.WriteLine(response.StatusCode);
            if (response.IsSuccessStatusCode)
            {
                string stream = response.Content.ReadAsStringAsync().Result;
                Console.Write("Respuesta servicio: " + stream);
                Console.WriteLine(stream);
                string cp = "";
                HttpHeaders headers = response.Headers;
                IEnumerable<string> values;
                if (headers.TryGetValues("Content-Disposition", out values))
                {
                    cp = values.ToString();
                }

            }

Answer 1

如果你想获取内容的标题，它应该来自response.Content.Headers