Restrict the min/max zoom on a Bing Map with v7 of the AJAX control?

Question

I\'m working on a site that makes use of v7 of the Bing Maps AJAX Control. One of the things I need to do is restrict the zoom level so as to prevent users from zoom in past

Answer 1

I was dealing with a similar issue and I ended up doing something very similar to what MrJamin describes in his answer, with one (subtle, but major) difference: I added a handler for targetviewchanged. According to the official docs on MSDN, 'targetviewchanged' occurs when the view towards which the map is navigating changes. Also, instead of calling Map#getZoom, I used Map#getTargetZoom which returns the zoom level of the view to which the map is navigating. Note, this approach prevents jitter.

Here's the shortened version of my code:

function restrictZoom(map,min,max) {
  Microsoft.Maps.Events.addHandler(map,'targetviewchanged',function(){
    var targetZoom = map.getTargetZoom();
    var adjZoom = targetZoom;

    if(targetZoom > max) {
      adjZoom = max;
    } else if(targetZoom < min) {
      adjZoom = min;
    }

    if(targetZoom != adjZoom) {
      map.setView({zoom:adjZoom});
    }
  });
}