How to draw a polygon on radmap, and calculate its area

[Jimmy]

I want to draw a polygon when mouse enter on radmap , and double-click the map to end to  calculate  the polygon area,How can i do ? 

[Andrey]

Hi Jimmy,

I have attached a sample solution which allows to draw polygon using the MapMouseClick and MapMouseDoubleClick events.
The calculation of total area which is covered by polygon on the Earth is a very complicated mathematic task. Unfortunately it is out of scope the support of RadMap control.

All the best,
Andrey Murzov
the Telerik team

[Jimmy]

Thanks for you help!!!

[Sadjad]

Thanks

[Kenny Johansen]

When using this example I sometimes get wired results.

I start clinking on the map to draw polylines (works fine), but sometimes when I drag the mouse over or left of the first position all the polylines I have drawn gets displaced away from the mouse pointer. When I double click the polygon gets drawn in the correct place.

Any solution to this?

[Andrey]

Hi Kenny,

Unfortunately we can't reproduce the problem. Could you, please, provide us with step-by-step description of how we can reproduce this issue? Also could you, please, provide us with some screenshots which clarify the problem?

All the best,
Andrey Murzov
the Telerik team

[Autolog]

I fixed it by upgrading to RadControls 2013 Q3 and Silverlight 5