How to capture Zoom event

jubinjose — Wed, 18 Apr 2012 19:25:54 GMT

I have a esri map with a basic ArcGISTiledMapServiceLayer and a graphics layer.
I want to change the size of picturesymbols in my graphics layer based on zoom level.

So how do i go about capturing the Zoom event of the map either by using mouse or the navigation control ?

Do i just handle ExtentChanged on the map and check if scale is different than previous value? Is it even the right approach?
Or is there a better way

I searched for quite some time, but all examples I see are Web or Flex or SilverLight and the events / methods mentioned therein are not exactly applicable to me since I am on strictly a WPF app.

Hence asking. Appreciate your help.

Re: How to capture Zoom event

AvnerKashtan — Thu, 19 Apr 2012 11:05:55 GMT

I have a esri map with a basic ArcGISTiledMapServiceLayer and a graphics layer.
I want to change the size of picturesymbols in my graphics layer based on zoom level.

So how do i go about capturing the Zoom event of the map either by using mouse or the navigation control ?

Do i just handle ExtentChanged on the map and check if scale is different than previous value? Is it even the right approach?
Or is there a better way

I searched for quite some time, but all examples I see are Web or Flex or SilverLight and the events / methods mentioned therein are not exactly applicable to me since I am on strictly a WPF app.

Hence asking. Appreciate your help.

I don't know what the official way is, but that's what I did when I wanted to implement an undo mechanism for zoom/pan. I caught the ExtentChanged event and stored the Extendenvelope for each change. I think that's the best way to do what you're trying to do.

topic How to capture Zoom event in ArcGIS Runtime SDK for WPF (Retired) Questions

How to capture Zoom event

Re: How to capture Zoom event