Need to control zoom factor in ZoomInFixed and ZoomOutFixed. .NET C# WPF.

Question

Zooming in and out programmatically in C# works very well but ZoomInFixed and ZoomOutFixed don't allow you to to zoom to an exact scale as you apparently can't change the zoom factor - is there a property hidden away somewhere to control this?

Wolf · Answer

i copied the code snippet above from a working sample, so yes it does work on 2D maps (scale is not relevant in 3D). i don't know any way to change the behavior of the built-in ZoomInFixed/ZoomOutFixed buttons.

JonathanQuick · Answer

Have you succeeded in making this work? It was one of the first alternatives I tried and didn't work for me. My code looked pretty much like yours.

I guess the answer to my original question is that there is no way of setting the zoom factor for ZoomInFixed and ZoomOutFixed?

Wolf · Answer

You can make an add-in with buttons for your own zoom functionality. Here is the sample button code to step down the scale: protected override void OnClick() { // get the active mapview MapView activeMapView = MapView.Active; if (activeMapView == null) return; // note that MapView.ZoomIn must be called on the MCT QueuedTask.Run(() => { // get the original camera position var camera = activeMapView.Camera; // lower the scale var scale = camera.Scale - 1.0; var sScale = $@"{scale:0}"; sScale = sScale.Substring(0, 1).PadRight(sScale.Length).Replace(' ', '0'); var nextLowerScale = double.Parse(sScale); camera.Scale = nextLowerScale; // zoom in activeMapView.ZoomTo(camera); }); }‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ Please note that working with scale(s) in only relevant in 2D maps.