i split my route and save line in varibale which
LineBaseShape line = (LineBaseShape)routingResult.Route.GetLineOnALine(startpoint, newpoint);
now i want to find this line's midvertex i used
midpoint = line.GetPointOnALine(StartingPoint.FirstPoint, 50);
but it gives error
'ThinkGeo.MapSuite.Core.LineBaseShape' does not contain a definition for 'GetPointOnALine' and no extension method 'GetPointOnALine' accepting a first argument of type 'ThinkGeo.MapSuite.Core.LineBaseShape' could be found (are you missing a using directive or an assembly reference?)
which assembly do i use for this?