如何將簡單的流（http webresponse）轉換爲c＃windows 8中的bitmapimage？

Question

我嘗試1000次，轉換成一個簡單的流（HTTP WebResponse類）以BitmapImage的，但沒有一個教程是工作在C＃Windows 8的

例子：

BitmapImage image = new BitmapImage(); 
image.SetSource(stream); 
image1.Source = image; 

感謝對所有答覆。

解決方案

InMemoryRandomAccessStream randomAccessStream = new InMemoryRandomAccessStream(); 
DataWriter writer = new DataWriter(randomAccessStream.GetOutputStreamAt(0)); 
writer.WriteBytes((byte[])command); 
await writer.StoreAsync(); 
BitmapImage image = new BitmapImage(); 
image.SetSource(randomAccessStream); 

Answer 1

你試過嗎？

InMemoryRandomAccessStream randomAccessStream = new InMemoryRandomAccessStream(); 
DataWriter writer = new DataWriter(randomAccessStream.GetOutputStreamAt(0)); 
writer.WriteBytes(response.Content.ReadAsByteArray()); 
BitmapImage image = new BitmapImage(); 
image.SetSource(randomAccessStream); 

Answer 2

試試這個代碼：

private async Task GetLocalImageAsync(string internetUri, string folderName, 
             string uniqueName) 
{ 
    using (var response = await HttpWebRequest.CreateHttp(internetUri) 
           .GetResponseAsync()) 
    { 
     using (var stream = response.GetResponseStream()) 
     { 
      var folder = await ApplicationData.Current.LocalFolder 
           .CreateFolderAsync(folderName, 
             CreationCollisionOption.OpenIfExists); 
      var file = await folder.CreateFileAsync(
            string.Format("{0}", uniqueName), 
            CreationCollisionOption.ReplaceExisting); 
      using (var filestream = await file.OpenStreamForWriteAsync()) 
      { 
       await stream.CopyToAsync(filestream); 
       await filestream.FlushAsync(); 
      } 
     } 
    } 
}