topic Re: UndoLastEdit in ArcGIS API for Silverlight Questions

UndoLastEdit

ArneDahlman — Thu, 07 Feb 2013 08:29:56 GMT

Hi,

Users of my Silverlight 2.4 application wants to be able to undo vertex clicks as they are drawing a new polygon.

For example.
The third vertex was placed in the wrong location. Press 'U', the point is removed and the user can continue drawing, click/place a new vertex...

Is this possible to achieive in 2.4 or later versions?

The UndoLastEdit from EditGeometry seems only to work when vertex editing is activated. This is not the case here.

Re: UndoLastEdit

DominiqueBroux — Thu, 07 Feb 2013 10:48:34 GMT

Did you look at the UndoLastVertex method?
Seems to be what you are looking for.

Re: UndoLastEdit

ArneDahlman — Mon, 11 Feb 2013 10:27:04 GMT

Thank you for your reply.

Now I have tried UndoLastVertex in the Draw class as you suggested.
I works fine.

To use this I guess that instead of using the add command in Editor class, I need to make my own add functionality using Draw class.
Correct? Or is there any way to get a current Draw object instance from the editor?

Re: UndoLastEdit

ArneDahlman — Thu, 21 Feb 2013 07:35:07 GMT

It worked out well.
I replaced the standard Add-tool with my own funktionality.

In case someone is interested, this is the workflow:
* Drawing a geometry using ESRI.ArcGIS.Client.Draw (get symbol and geometrytype from FeatureLayer.LayerInfo)
* Create new Graphic (get attributes from FeatureLayer.LayerInfo.Fields)
* Add Graphic to the map.

The undo is triggered by a key-event.