public void CalculateRoute(
    List<RouteWaypoint> waypoints,
    AzureRouteOptions options
)

Public Sub CalculateRoute(
    waypoints As List(Of RouteWaypoint),
    options As AzureRouteOptions
)

using DevExpress.XtraMap;
// ...
const string key = "your key";
// ...
private void Form1_Load(object sender, EventArgs e) {
    MapControl map = new MapControl();
    // Specify the map position on the form.           
    map.Dock = DockStyle.Fill;
    // Create a layer.
    ImageLayer image = new ImageLayer();
    image.DataProvider = new AzureMapDataProvider(){
        AzureKey = key,
    };
    AzureRouteDataProvider routeProvider = new AzureRouteDataProvider();
    routeProvider.AzureKey = key;
    // Create three waypoints and add them to the route waypoints list.
    List<RouteWaypoint> waypoints = new List<RouteWaypoint>();
    waypoints.Add(new RouteWaypoint("NY", new GeoPoint(41.145556, -73.995)));
    waypoints.Add(new RouteWaypoint("Oklahoma", new GeoPoint(36.131389, -95.937222)));
    waypoints.Add(new RouteWaypoint("Las Vegas", new GeoPoint(36.175, -115.136389)));
    // Call the AzureRouteDataProvider.CalculateRoute method.
    azureRoute.CalculateRoute(waypoints, new AzureRouteOptions() {
        TravelMode = AzureTravelMode.Car,
        AvoidTypes = AzureRouteAvoidType.AlreadyUsedRoads
    });
    InformationLayer route = new InformationLayer();
    route.DataProvider = routeProvider;
    map.Layers.AddRange(new LayerBase[] { image, route});
    this.Controls.Add(map);
}

Imports DevExpress.XtraMap
' ...
Private Const key As String = "your key"
' ...
Private Sub Form1_Load(ByVal sender As Object, ByVal e As EventArgs)
    Dim map As New MapControl()
    ' Specify the map position on the form.           
    map.Dock = DockStyle.Fill
    ' Create a layer.
    Dim image As New ImageLayer()
    image.DataProvider = New AzureMapDataProvider() With {.AzureKey = key}
    Dim routeProvider As New AzureRouteDataProvider()
    routeProvider.AzureKey = key
    ' Create three waypoints and add them to the route waypoints list.
    Dim waypoints As New List(Of RouteWaypoint)()
    waypoints.Add(New RouteWaypoint("NY", New GeoPoint(41.145556, -73.995)))
    waypoints.Add(New RouteWaypoint("Oklahoma", New GeoPoint(36.131389, -95.937222)))
    waypoints.Add(New RouteWaypoint("Las Vegas", New GeoPoint(36.175, -115.136389)))
    ' Call the AzureRouteDataProvider.CalculateRoute method.
    azureRoute.CalculateRoute(waypoints, New AzureRouteOptions() With {
      .TravelMode = AzureTravelMode.Car,
      .AvoidTypes = AzureRouteAvoidType.AlreadyUsedRoads
    })
    Dim route As New InformationLayer()
    route.DataProvider = routeProvider
    map.Layers.AddRange(New LayerBase() { image, route})
    Me.Controls.Add(map)
End Sub

}
azureRoute.CalculateRoute(geoPoints.Select(point => new RouteWaypoint("", point)).ToList(), new AzureRouteOptions() {
    TravelMode = GetTravelMode(),

azureRoute.CalculateRoute(geoPoints.[Select](Function(point) New RouteWaypoint("", point)).ToList(), New AzureRouteOptions() With {.TravelMode = GetTravelMode(), .AvoidTypes = GetAvoidTypes()})
geoPoints.Clear()