As you know, the Desktop version doesn't support smooth zooming in/out. So I thought that I'd limit users to 10 levels based on a track bar displayed at the bottom of the window (see below).
However, when I use the trackbar, and try to set the zoom it just doesn't seem to do what I expect.
Is there a white paper/discussion on zoom levels that can really help me get a handle on how zoom levels work, etc.?
Thanks.
bob
Hi Bob,
You can set maximum and minimum scale to limit zoom in/out. If you want to set the trackbar same as handle of mouse wheel on the map, you can get zoom scale using ZoomlevelSet.GetLower/HigherLevelScale() when move track bar button, and then call Map.ZoomToScale() to set zoom, but it’s necessary that you have no custom zoom levels.
I have attached a sample to show this method, please try it out.
Thanks,
Edgar
TrackBarSample.zip (963 KB)