Thank you, it works perfectly !!!!!

Hello Paul,

I've tried that:

PageHAlign : Center
PageVAlign: Top
VerticalAlignement: Stretch
Vertical contentAlignement : Top

And then i tried with this code:

private void pdfViewerMouseWheel(object sender, MouseWheelEventArgs e)
{
if (e.Delta < 0 || e.Delta > 0)
{
// Get the x and y coordinates of the mouse pointer.
System.Windows.Point position = e.GetPosition(this);
double pY = position.Y;
double pX = position.X;


// Sets the Height/Width of the circle to the mouse coordinates.
pdfViewer.Height = pY;
pdfViewer.Width = pX;


}
}

The problem is that all the pdfViewer move and i would like that only the open PDF follows the mouse cursor...
Can you help me?

Thanks

Hello everyone,

With your help, and more specifically, Paul Rayman's help (thanks again), I have been able to put a nice mouse wheel zoom on my application.
I'm now facing a new zoom problem.
When I zoom out on my PDF, there is no problem, but when i zoom in, the zoom isn't very precise at the beginning because the PDF page is vertically centered when the vertical scrollbar is visible.

I would like that the PDF stay focus on where the mouse cursor is (vertically). I would like to end up with a floating margin top and bottom.

Can someone tell me where (or how) the PDF position is managed.

Thank you very much !