title: How I can use getPixel method on BitmapImage class?
body: <p>I mean I want to use get pixel method on wp7. I do not use Bitmap class.It is possible or I don't use it and I can use writeableBitmap instead of Bitmap. And when I use writeableBitmap class I can not use getPixel method.How I can use?</p>
  
  <p>for ex:</p>
  
  <pre><code>WriteableBitmap image;
  int a=image.GetPixel(i, j).G;
  </code></pre>