CODEWITHSUNDEEP
wpfprintingdpi
Adam Tegen
Adam Tegen

Reputation: 25905

How to get the DPI of the printer in WPF

I have a WPF application with a custom control. The custom control renders itself to a bitmap and I am able to use the following code to figure out what resolution to use so that the bitmap matches the display resolution.

        PresentationSource ps = PresentationSource.FromVisual(this);
        if (ps != null)
        {
            pixelsPerLogicalUnitX = ps.CompositionTarget.TransformToDevice.M11;
            pixelsPerLogicalUnitY = ps.CompositionTarget.TransformToDevice.M22;
        }

Unfortunately, when I send this control to the printer through a PrintDialog, the PresentationSource is null so I don't know the DPI.

Is there a way to get the DPI ( or a PresentationSource ) for the printer?

Upvotes: 6

Views: 2654

Answers (1)

Robert Levy
Robert Levy

Reputation: 29083

you are looking for PrintTicket.PageResolution

http://msdn.microsoft.com/en-us/library/system.printing.printticket.pageresolution.aspx

Upvotes: 5

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