using System;

using System.Windows;       

​

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

​

}

​

public class Printer

{

    Canvas cnvTest = new Canvas();

    ScaleTransform st = new ScaleTransform();

    public  Printer()

    {

        ImageBrush ib = new ImageBrush();

        ib.ImageSource = new BitmapImage(new Uri(@"c:\Users\"));

        cnvTest.Background = ib;

        cnvTest.RenderTransform = st;       

        cnvTest.MouseWheel += (sender,e) =>

        {

            if(e.Delta > 0)

            {

                st.ScaleX *= 2;

                st.ScaleY *= 2;

            }

            else

            {

                st.ScaleX /= 2;

                st.ScaleY /= 2;

            }

        };

    }

    private void button_Click(object sender, RoutedEventArgs e)

    {

        PrintDialog prnt = new PrintDialog();

        if(prnt.ShowDialog() == true)

        {

            cnvTest.RenderTransform.ScaleX = 1;

            cnvTest.RenderTransform.ScaleY = 1;

            prnt.PrintVisual(cnvTest,"Printing Canvas");

        }

    }

    private struct PixelUnitFactor

    {

        public const double Px = 1.0;

        public const double Inch = 96.0;

        public const double Cm = 37.7952755905512;

        public const double Pt = 1.33333333333333;

    }    

    public double CmToPx(double cm)

    {

        return cm * PixelUnitFactor.Cm;

    }

    public double PxToCm(double px)

    {

        return px / PixelUnitFactor.Cm;

    }

​

}