detecting intersection between 2 polylines?

[linusang]

Hi

how do i detect if a Polyline intersects with the another Polyline? I am aware that the Envelope class has the intersect method but that is inaccurate because it is using the bounds of the Polyline?

Thanks!

[JenniferNery]

You can use GeometryService.Intersect() http://help.arcgis.com/en/webapi/silverlight/samples/start.htm#Intersect

[linusang]

hmm i'm looking for an application-code solution instead of requesting from a server as i require immediate response... there is no other way besides requesting from a service?

[JenniferNery]

The only client-side calculation the API offers for finding intersection is in Envelope geometry which may not be as accurate as you need it to be when finding interesection between Polylines. The other option would be to use GeometryService.Intersect.