File Upload in Xamarin App and storage?

I need the ability to upload a file in my Xamarin app. How is this typically done for both iOS and Android and where do people host the files that have been uploaded for easy/quick retrieval?

Thanks!
Tyler

Answers

  • seanydaseanyda GBMember ✭✭✭✭✭

    You'll need to a WebService which is expecting the data. But this is the code I use to send bytes to the WebService.

    async Task SendFileToServer(byte[] image, string id)
            {
                try
                {
                    Uri webService = new Uri(URL + "imageUpload/" + id);
                    using (var content = new MultipartFormDataContent("----MyGreatBoundary"))
                    {
                        using (var memoryStream = new MemoryStream(image))
                        {
                            using (var stream = new StreamContent(memoryStream))
                            {
                                content.Add(stream, "file", Guid.NewGuid().ToString() + ".jpg");
                                using (var message = await Client.PostAsync(webService, content))
                                {
                                    if (message.ReasonPhrase.ToLower() == "OK".ToLower())
                                    {
                                        imagesToUpload.Remove(imagesToUpload.FirstOrDefault(f => f.imageBytes == image));
                                        content.Dispose();
                                    }
                                }
                            }
                        }
                    }
                }
                catch (Exception e) { }
            }
    
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