Magnify pan and zoom Image in Silverlight

How can i implement zoom , Pan , Magnify in silverlight. I have big image so my image is inside scroll viewer.

and after zooming and panning i need to save position and zoom setting in databa开发者_开发技巧se so when user back to screen can see same image area.

I have used this CodePlex ZoomControl before, which worked great for us. We didn't save the position, but I think it would be possible to save and load the MatrixTransform that this control uses. There's an example of how to implement this control on this previous question that I answered. I know I didn't directly answer your question, but maybe this will help you get to a working solution.