I find problems with elements ActualHeight = 0 and Number Fixed of Pages = 1

[francescopaolopassaro]

This fix resolve this problems:
At line 179 :
bool? result = printDialog.ShowDialog(); //Add this two lines: reportContainer.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity)); reportContainer.Arrange(new Rect(0, 0, reportContainer.DesiredSize.Width, reportContainer.DesiredSize.Height));

now i've all objects in more pages...