public List <ShortestResponse> GetAllPaths(SearchReq request) { MethodBase currentMethod = MethodBase.GetCurrentMethod(); try { DepthFirstTraversal graph = new DepthFirstTraversal(9); graph.addEdge(0, 1); graph.addEdge(0, 2); graph.addEdge(1, 2); graph.addEdge(1, 4); graph.addEdge(2, 1); graph.addEdge(2, 6); graph.addEdge(3, 8); graph.addEdge(4, 0); graph.addEdge(4, 2); graph.addEdge(5, 0); graph.addEdge(5, 6); graph.addEdge(6, 5); graph.addEdge(6, 7); graph.addEdge(7, 8); graph.addEdge(8, 2); graph.addEdge(8, 3); var source = graph.datacode.FirstOrDefault(x => x.Key == request.source).Value; var destination = graph.datacode.FirstOrDefault(x => x.Key == request.destination).Value; graph.printAllPaths(source, destination); return(graph.ShortestResponses); } catch (Exception ex) { AirlineLogManager.Error(null, CurrentClass, currentMethod, ex); } return(null); }