WriteableBitmap/BitmapImage/MemoryStream/byte[]相互转换

1 WriteableBitmap/BitmapImage/MemoryStream/byte[]相互转换

2012-12-18 17:27:04|  分类： Windows Phone 8|字号 订阅

 

 

，WriteableBitmap与BitmapImage转换

1.1 BitmapImage  to WriteableBitmap

BitmapImage bitmapImage=new BitmapImage(new Uri(“http://...”,UriKind.Revelate));

WriteableBitmap writeableBitmap = new WriteableBitmap(bitmapImage);

1.2 WriteableBitmap to BitmapImage

MemoryStream stream = new MemoryStream();

writeableBitmap.SaveJpeg(stream, writeableBitmap.PixelWidth,

writeableBitmap.PixelHeight,0,100);

BitmapImage temp = new BitmapImage();

temp.SetSource(stream);

，WriteableBitmap/BitmapImage to byte[]

2.1 WriteableBitmap to byte[]

MemoryStream stream = new MemoryStream();

writeableBitmap.SaveJpeg(stream, writeableBitmap.PixelWidth,

writeableBitmap.PixelHeight,0,100);

byte[]rgbBytes = stream.ToArray();

2.2 byte[] to WriteableBitmap

byte[]rgbBytes;

MemoryStream stream = new MemoryStream(rgbBytes);

WriteableBitmap writeableBitmap = new WriteableBitmap(width,height);

writeableBitmap.LoadJpeg(stream);

2.3 BitmapImage to byte[]

BitmapImage bitmapImage=new BitmapImage(new Uri(“http://...”,UriKind.Revelate));

WriteableBitmap writeableBitmap = new WriteableBitmap(bitmapImage);

MemoryStream stream = new MemoryStream();

writeableBitmap.SaveJpeg(stream, writeableBitmap.PixelWidth,

writeableBitmap.PixelHeight,0,100);

byte[]rgbBytes = stream.ToArray();

2.4 byte[] to BitmapImage

byte[]rgbBytes;

MemoryStream stream = new MemoryStream(rgbBytes);

BitmapImage bitmapImage = new BitmapImage();

bitmapImage.SetSource(stream);

，WriteableBitmap/BitmapImage to stream

3.1 WriteableBitmap to stream

MemoryStream stream = new MemoryStream();

writeableBitmap.SaveJpeg(stream, writeableBitmap.PixelWidth,

writeableBitmap.PixelHeight,0,100);

3.2 MemoryStream to WriteableBitmap

BitmapImage bitmapImage = new BitmapImage();

bitmapImage.SetSource(memoryStream);

WriteableBitmap writeableBitmap = new WriteableBitmap (bitmapImage);

3.3 BitmapImage to MemoryStream

BitmapImage bitmapImage;

WriteableBitmap writeableBitmap = new WriteableBitmap(bitmapImage);

MemoryStream stream = new MemoryStream();

writeableBitmap.SaveJpeg(stream, writeableBitmap.PixelWidth, writeableBitmap.PixelHeight,0,100);

3.4 MemoryStream to BitmapImage

BitmapImage bitmapImage = new BitmapImage();

bitmapImage.SetSource(stream);