Question

我正在开发一款Windows Phone 8应用程序。现在我必须将从我的画廊中选择的图像发布到web api。这个api受密码保护，因此需要传递http客户端库的身份验证头中的用户名和密码。其次，图像，aboutme和其他属性形式的数据将在api上发布。但是有一个问题我不知道它的崩溃程度。我已经在这个代码片段中给出了文本api，如果实际需要那么你可以问我。但需要知道我在使用表单数据传递http客户端标题时出错了。我的代码片段如下：

 async   void photoChooserTask_Completed(object sender, PhotoResult e)
    {
        if (e.TaskResult == TaskResult.OK)
        {
          //  MessageBox.Show(e.ChosenPhoto.Length.ToString());

            //Code to display the photo on the page in an image control named myImage.


            photoStream = new MemoryStream();


            e.ChosenPhoto.CopyTo(photoStream);


            fileName = e.OriginalFileName;


            MessageBox.Show(fileName);


            System.Windows.Media.Imaging.BitmapImage bmp = new System.Windows.Media.Imaging.BitmapImage();
            bmp.SetSource(e.ChosenPhoto);

            int a = bmp.PixelHeight;
            int b = bmp.PixelWidth;

            ApplicationSettingHelper.AddOrUpdateValue("profilepicture", e.OriginalFileName);
            ApplicationSettingHelper.Save();


                string User_id = "221296";
                string About_me = AboutMeText.Text;
                string Country = "Dubai";
                string Session_token = "54143870560e6136764dc9.77573702";                              
                byte[] Imagedata = bitmapConverter(bmp);


                UploadFile(User_id, About_me, Country, Session_token, photoStream);

}

/////////////////////////////////////////////// /////////

  private async void UploadFile(string user_id,string about_me,string country,string session_token,MemoryStream photoStream)
    {
        try
        {
            // Make sure there is a picture selected
            if (photoStream != null)
            {
                 const string uri = "http://api.etc";
                using (var client = new HttpClient())
                { 
                    var byteArray = Encoding.UTF8.GetBytes("prototype:prototype");
                    var header = new AuthenticationHeaderValue(
                               "Basic", Convert.ToBase64String(byteArray));
                    client.DefaultRequestHeaders.Authorization = header;




                    MultipartFormDataContent content = new MultipartFormDataContent();
                    content.Add(new StreamContent(photoStream), "profile_image");
                    content.Add(new StringContent(user_id), "user_id");
                    content.Add(new StringContent(about_me), "about_me");
                    content.Add(new StringContent(country), "country");
                    content.Add(new StringContent(session_token), "session_token");


                    // var result = await client.PostAsync(uri, content);

                    await client.PostAsync(uri, content)
                    .ContinueWith((postTask) =>
                    {
                        postTask.Result.EnsureSuccessStatusCode();
                    });



                }



        }
        catch(Exception ex)
        {
            var message = ex.Message + ex.StackTrace.ToString();
            var test = message;

        }
    }

在http客户端身份验证标头中发布并发布多部分表单数据

0 个答案: