c# - Printing XPS document with image. Different image size when set different dpi -


i printing xps document images, contains qr-codes. image creating sample here: 

 image image = createpresentation(qrcode);  image.height = 200;  image.width = 200;  image.horizontalalignment = horizontalalignment.center;  image.verticalalignment = verticalalignment.center;  image.stretch = stretch.none;

where 

 public static image createpresentation(system.drawing.image source)     {         stream stream = new memorystream();         source.save(stream, imageformat.png);         image image = new image();          bitmapimage src = new bitmapimage();         src.begininit();         src.streamsource = stream;         src.endinit();          image.source = src;         return image;     }

when have monitor dpi=96 image size on printed page (on paper after printing) more larger when have montor dpi=120. how can print images same size on different dpi?

when replaced 

 image.stretch = stretch.none;

on

 image.stretch = stretch.fill;

image began print correct


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