Silverlight tips [2]: How to convert image to bytes

In Silverlight, any uielement can be converted to writeablebitmap. But how can we convert writeablebitmap to bytes?

View code

  Public   Static   Byte [] Tobytearray ( This  Writeablebitmap input ){  Int [] Pixels = Input. pixels;  Int Length = pixels. length * 4  ;  Byte [] Result =New   Byte  [Length]; buffer. blockcopy (pixels,  0 , Result, 0  , Length );  Return  Result ;} 

Note: bytes only contains the basic pixel information of the image, and does not contain the image height and width.

The following is the conversion from bytes to image.

View code

  Public   static  image convertbytestoimage ( This   byte  [] input,  int  pixelwidth,  int   pixelheight) {writeablebitmap bitmap  =  New   writeablebitmap (pixelwidth, pixelheight); bitmap. frombytearray (input);   return   New  image () {source = bitmap, stretch =  stretch. none };}