One very easy way to print any WPF object is to use PrintDialog:
Code:
PrintDialog printDialog = new System.Windows.Controls.PrintDialog();
if (printDialog.ShowDialog() == true)
printDialog.PrintVisual(anyWpfElement, "Print job title");
Replace anyWpfElement with the read svg element.
I have use that quite a while ago. So maybe there is some better way to do it or this process has some additional settings. Please check the web for more info.