MemoryStream -> BitmapFrame -> WritableBitmapという流れでやるとよいらしいです。下記のサンプルでは、MemoryStreamへの変換を2回やってますが、1回でいいかもしれません。
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//dataはByteArray | |
MemoryStream mstr = new MemoryStream(data); | |
//MemoryStream ms = new MemoryStream(mstr.ToArray()); //この処理は多分不要 | |
WriteableBitmap wbmp = new WriteableBitmap(BitmapFrame.Create(ms)); |
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