Xamarin.Forms 使用HttpClient上傳文件

在應用開發中，上傳圖片很多時候都是不可避免的問題；

以下用HttpClient實現的上傳文件代碼：

 

 

 public static async Task<string> UploadFileAsync(string url ,string path)
        {
            using (var client = new HttpClient())
            {
                using (var content = new MultipartFormDataContent("Upload----" + DateTime.Now.Ticks.ToString("x")))
                {
                    var upfilebytes = File.ReadAllBytes(path);
                    var ms = new MemoryStream(upfilebytes);
                    content.Add(new StreamContent(ms), "file", "upload.jpg");
                    using (var httpResponseMessage = await client.PostAsync(url, content))
                    {
                        var responseContent = "";
                        if (httpResponseMessage.IsSuccessStatusCode)
                        {
                            responseContent = await httpResponseMessage.Content.ReadAsStringAsync();
                        }
                        return responseContent;
                    }
                }
            }
        }