private async void UploadBlob(CloudBlobContainer container, StorageFile file, string fileName, int fileId, long fileSize)
{
using (var fileStream = await file.OpenStreamForReadAsync())
{
// Retrieve reference to a blob
CloudBlockBlob blob = container.GetBlockBlobReference(fileName);
AzureProgressStream progressStream = new AzureProgressStream(fileStream);
progressStream.ProgressChanged += pstream_ProgressChanged;
progressStream.SetLength(fileSize);
progressStream.FileId = fileId;
IInputStream inputStream = WindowsRuntimeStreamExtensions.AsInputStream(progressStream);
await blob.UploadFromStreamAsync(inputStream);
}
}
internal static ImageSource ToImageSource(this byte[] rawImageBytes)
{
if (rawImageBytes == null)
{
return(null);
}
BitmapImage img = null;
try
{
using (MemoryStream stream = new MemoryStream(rawImageBytes))
{
stream.Seek(0L, SeekOrigin.Begin);
img = new BitmapImage();
InMemoryRandomAccessStream streamSource = new InMemoryRandomAccessStream();
IOutputStream outputStreamAt = streamSource.GetOutputStreamAt(0L);
WindowsRuntimeSystemExtensions.AsTask <ulong, ulong>(RandomAccessStream.CopyAsync(WindowsRuntimeStreamExtensions.AsInputStream(stream), outputStreamAt)).Wait();
img.SetSource(streamSource);
}
}
catch { }
return(img);
}
/// <summary>
/// MBAASからPDFをダウンロードしてPictureBoxに画像として表示する。
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private async void ButtonDownload_Click(object sender, EventArgs e)
{
using (HttpClient httpClient = new HttpClient())
{
// HTTPリクエスト作成
HttpRequestMessage httpRequestMessage = new HttpRequestMessage(HttpMethod.Get, REST_API_DOWNLOAD_URL);
// HTTPヘッダの設定(必要に応じて)
//httpRequestMessage.Headers.Add(@"key", value);
// Basic認証(必要に応じて)
//string username = @"username";
//string password = @"password";
//string authorizationParam = Convert.ToBase64String(Encoding.ASCII.GetBytes(String.Format("{0}:{1}", username, password)));
//httpRequestMessage.Headers.Authorization = new AuthenticationHeaderValue("Basic", authorizationParam);
Console.WriteLine("<HTTP request Header>-----------------------------------------------------------");
Console.WriteLine(httpRequestMessage.Headers.ToString());
Console.WriteLine("--------------------------------------------------------------------------------");
// HTTPリクエスト送信(非同期)
HttpResponseMessage httpResponseMessage = null;
try
{
httpResponseMessage = await httpClient.SendAsync(httpRequestMessage);
}
catch (Exception exception)
{
// 通信エラー
string message = String.Format("通信エラー : {0}", exception.Message);
Console.WriteLine(exception.StackTrace);
Console.WriteLine(message);
MessageBox.Show(message);
return;
}
// HTTPステータスチェック
if (httpResponseMessage.StatusCode == HttpStatusCode.OK)
{
// 成功
Console.WriteLine("ダウンロード成功");
}
else
{
// 失敗
string message = String.Format("ダウンロードエラー : {0}", httpResponseMessage.ReasonPhrase);
Console.WriteLine(message);
MessageBox.Show(message);
return;
}
Console.WriteLine("<HTTP request Header>-----------------------------------------------------------");
Console.WriteLine(httpResponseMessage.Headers.ToString());
Console.WriteLine("--------------------------------------------------------------------------------");
try
{
// HTTPレスポンスからPDFデータを取得
using (Stream pdfStream = await httpResponseMessage.Content.ReadAsStreamAsync())
{
// .NETストリームをWindowsランタイムストリームに変換
IInputStream inputStream = WindowsRuntimeStreamExtensions.AsInputStream(pdfStream);
// ストリームからPDFオブジェクト作成
PdfDocument pdfDocument = await PdfDocument.LoadFromStreamAsync((IRandomAccessStream)inputStream);
// PDFの１ページ目をストリームにレンダリング
InMemoryRandomAccessStream inMemoryRandomAccessStream = new InMemoryRandomAccessStream();
using (PdfPage pdfPage = pdfDocument.GetPage(0))
{
await pdfPage.RenderToStreamAsync(inMemoryRandomAccessStream);
}
// ストリームからビットマップオブジェクト作成
Bitmap bitmap = new Bitmap(inMemoryRandomAccessStream.AsStreamForRead());
// PixtureBoxにビットマップを描画
pictureBox.Width = bitmap.Width;
pictureBox.Height = bitmap.Height;
pictureBox.Image = bitmap;
}
}
catch (Exception exception)
{
// PDF変換失敗
string message = String.Format("PDFの変換に失敗 : {0}", exception.Message);
Console.WriteLine(exception.StackTrace);
Console.WriteLine(message);
MessageBox.Show(message);
}
}
}
