Recently, I was in a (Winform) project using an activeX of MapWinGis controls, there is a function tortured me for a long time, users zoom in and out on the map image. Has no control, the layer will be reduced to a small, magnified to a great I control the maximum value and the minimum reduction value amplification ....For example: you can only zoom the map in or out 5 times 5 times, I want to control the user can not continue to zoom in or out on the map layers.Ask friends who have done this. Thank you