转换字节数组或文件存储位图图像 [英] Convert byte Array or File Storage to Bitmap Image

问题描述

我选择文件后，存储文件，我怎么能转换这个文件是שN个图像，以类似资料图片显示呢？结果
我将该文件转换为字节数组，但不知道是什么下一步或有一个其他的方式？

下面是我的代码：

  VAR openPicker =新的Windows。 Storage.Pickers.FileOpenPicker（）; 
 openPicker.ViewMode = Windows.Storage.Pickers.PickerViewMode.Thumbnail; 
 openPicker.SuggestedStartLocation = Windows.Storage.Pickers.PickerLocationId.DocumentsLibrary; 
 openPicker.FileTypeFilter.Add（PNG）; 
 openPicker.FileTypeFilter.Add（JPEG。）; 
 openPicker.FileTypeFilter.Add（JPG。）; 
 StorageFile文件=等待openPicker.PickSingleFileAsync（）; 
 
 VAR流=等待file.OpenReadAsync（）; 
 
使用（VAR的DataReader =新的DataReader（流））
 {
变种字节=新的字节[stream.Size] 
等待dataReader.LoadAsync（（UINT）stream.Size）; 
 dataReader.ReadBytes（字节）; 
变种流2 =新的MemoryStream（字节）; 
} 
  

解决方案

下面的代码转换字节成的BitmapImage

 的BitmapImage此搜索=新的BitmapImage（）; 
 InMemoryRandomAccessStream毫秒​​=新InMemoryRandomAccessStream（）; 
 ms.WriteAsync（tBytes.AsBuffer（））; 
 ms.FlushAsync（）AsTask（）等待（）。 
 ms.Seek（0）; 
 image1.SetSource（毫秒）; 
 image.Source = image1的; 
  

结果
我得到这个从什么地方，试试这个，如果有帮助。

  FileOpenPicker openPicker =新FileOpenPicker（）; 
 openPicker.FileTypeFilter.Add（JPG）; 
 openPicker.FileTypeFilter.Add（CMP）; 
 openPicker.FileTypeFilter.Add（PNG）; 
 openPicker.FileTypeFilter.Add（TIF。）; 
 openPicker.FileTypeFilter.Add（GIF）; 
 openPicker.FileTypeFilter.Add（BMP）; 
 StorageFile文件=等待openPicker.PickSingleFileAsync（）; 
 IRandomAccessStream流=等待file.OpenAsync（FileAccessMode.Read）; 
的BitmapImage BMP =新的BitmapImage（）; 
 bmp.SetSource（流）; 
 Image1.Source = BMP; 
  

After I pick file to storage file , How can I convert this file to be שn image in order to display it like profile picture?
I converted the file to byte array but don't know what to do next or there is an other way?

Here is my code :

var openPicker = new Windows.Storage.Pickers.FileOpenPicker();
openPicker.ViewMode = Windows.Storage.Pickers.PickerViewMode.Thumbnail;
openPicker.SuggestedStartLocation = Windows.Storage.Pickers.PickerLocationId.DocumentsLibrary;
openPicker.FileTypeFilter.Add(".png");
openPicker.FileTypeFilter.Add(".Jpeg");
openPicker.FileTypeFilter.Add(".Jpg");
StorageFile file = await openPicker.PickSingleFileAsync();

var stream = await file.OpenReadAsync();

using (var dataReader = new DataReader(stream))
  {
      var  bytes = new byte[stream.Size];
      await dataReader.LoadAsync((uint)stream.Size);
      dataReader.ReadBytes(bytes);
      var stream2 = new MemoryStream(bytes);
  }

解决方案

Below code converts bytes into BitmapImage

BitmapImage image1 = new BitmapImage();
InMemoryRandomAccessStream ms = new InMemoryRandomAccessStream();
ms.WriteAsync(tBytes.AsBuffer());
ms.FlushAsync().AsTask().Wait();
ms.Seek(0);
image1.SetSource(ms);
image.Source = image1;

I got this from somewhere, Try this if it helps

FileOpenPicker openPicker = new FileOpenPicker();
openPicker.FileTypeFilter.Add(".jpg");
openPicker.FileTypeFilter.Add(".cmp");
openPicker.FileTypeFilter.Add(".png");
openPicker.FileTypeFilter.Add(".tif");
openPicker.FileTypeFilter.Add(".gif");
openPicker.FileTypeFilter.Add(".bmp");
StorageFile file = await openPicker.PickSingleFileAsync();
IRandomAccessStream stream = await file.OpenAsync(FileAccessMode.Read);
BitmapImage bmp = new BitmapImage();
bmp.SetSource(stream);
Image1.Source = bmp;

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