使用HttpClient通过HTTP POST Windows Phone 8.1上传图像和字符串

Question

我在C#中有一个Windows Phone应用程序.我正在尝试将图像(byte [])和会话令牌(字符串)发送到我的django服务器,但不是如何做到这一点.

我看过其他帖子,但它不起作用,或者使用的类不存在.

我的功能的标题是:

    public static async Task<bool> sendImagePerfil(string token, byte[] imagen)
    {
        using (var client = new HttpClient())
        {
            var values = new List<KeyValuePair<string, string>>();
            values.Add(new KeyValuePair<string, string>("token", token));
            values.Add(new KeyValuePair<string, string>("image", Convert.ToString(imagen)));

            var content = new FormUrlEncodedContent(values);

            var response = await client.PostAsync("MyURL.domain/function", content);

            var responseString = await response.Content.ReadAsStringAsync();
        }


    }

编辑:我现在的问题是我的服务器没有得到图像.django代码是:

     if request.method == 'POST':
        form = RestrictedFileField(request.POST, request.FILES)
        token = models.UsuarioHasToken.objects.get(token=parameters['token'])
        user = token.user
        print (request.FILES['image'])
        user.image = request.FILES['image']

我无法修改django代码,因为此代码与Android应用程序一起使用

Answer 1

使用此响应,

如何使用HTTP POST multipart/form-data将文件上传到服务器

试试这个......

        HttpClient httpClient = new HttpClient();
        MultipartFormDataContent form = new MultipartFormDataContent();

        form.Add(new StringContent(token), "token");

        var imageForm = new ByteArrayContent(imagen, 0, imagen.Count());
        imagenForm.Headers.ContentType = new MediaTypeHeaderValue("image/jpg");

        form.Add(imagenForm, "image", "nameholder.jpg");

        HttpResponseMessage response = await httpClient.PostAsync("your_url_here", form);

        response.EnsureSuccessStatusCode();
        httpClient.Dispose();
        string result = response.Content.ReadAsStringAsync().Result;