What is the printing resolution of a XAML file?

I'm a designer and I like having a little control over the dimensions... I am styling a XAML file that is meant to be printed. Since dimensions are in pixels, I'd like to know which resolution I should base myself to c开发者_StackOverflow社区alculate lengths (in cm)?

Thank you!

According to Charles, Silverlight is fixed at 96 DPI:

As you know, a Silverlight program normally sizes graphical objects and controls entirely in units of pixels. However, when the printer is involved, coordinates and sizes are in device-independent units of 1/96th inch. Regardless of the actual resolution of the printer, from a Silverlight program the printer always appears to be a 96 DPI device.

...

PrintPageEventArgs has two handy get-only properties that also report sizes in units of 1/96th inch: PrintableArea of type Size provides the dimensions of the area of the printable area of the page, and PageMargins of type Thickness is the width of the left, top, right and bottom of the unprintable edges. Add these two together (in the right way) and you get the full size of the paper.

I did some quick searching, but couldn't turn up this info in the documentation. Leave it to Charles to know this sort of information.