title: How to draw some thing at the bing maps at the front end?
body: <p>I was doing a project using bing maps and need to draw something on it. When I draw lines and polygon continuously, the map reacted really slow. I'm not sure whether the map will interact with the back-end every time I draws something on it. If that is true, is it possible to drawing thing at the front-end first and when users pushes SAVE, the program will save all the changes to the back-end at one time? How?</p>