Possible to display route directions and show traffic?

[Rod Yager]

Are either of these possible? I currently do both right now using MS VEMap AJAX mapcontrol (Virtual Earth).

[Andrey]

Hi Rod Yager,

You can show a route using the MapPolyline class, but it does not support built-in driving direction feature like to displaying arrows.
We have the PITS issue for this feature.You can check when this feature will be available using the following link:
http://www.telerik.com/support/pits.aspx#/public/silverlight/1121

Also you can vote to speed up a development of this feature. One of the major criteria for priority of the feature development is a number of the customer's votes in PITS.

All the best,
Andrey Murzov
the Telerik team

[Rod Yager]

Thanks Andrey. So you don't have any sample code that iterates through the RouteLegs and compiles together the driving directions? In the RouteResponse.Result I can see Legs. In the those Legs I can see Intineraries with itineraryItems that have a text property with the directions in them.

<VirtualEarth:Action>Bear</VirtualEarth:Action> <VirtualEarth:TurnDir>left</VirtualEarth:TurnDir> onto <VirtualEarth:RoadName>US-18 East / W Bluemound Rd</VirtualEarth:RoadName>

Rod

[Rod Yager]

For what it is worth, I wrote my own method to parse the directions. Hope this helps anyone that needs it. I plan on placing this into a layer on my map.

StringBuilder sb = new StringBuilder();

            foreach (RouteLeg leg in routeResponse.Result.Legs)
            {
                if (leg.Itinerary.Count > 0)
                {
                    int itemCount = 1;
                    sb.Append(itemCount.ToString() + ".");

                    foreach (ItineraryItem item in leg.Itinerary)
                    {
                        string[] directions = item.Text.Split('>');
                        foreach (string part in directions)
                        {
                            if (!part.StartsWith("<"))
                            {
                                int posOfOpen = part.IndexOf("<");
                                string newWords = string.Empty;
                                if (posOfOpen >= 0)
                                {
                                    newWords = part.Substring(0, posOfOpen);
                                    sb.Append(newWords);
                                }
                                else
                                {
                                    sb.Append(part);
                                }
                            }

                        }

                        itemCount += 1;
                        sb.AppendLine("");
                        if (itemCount <= leg.Itinerary.Count)
                        {
                            sb.Append(itemCount.ToString() + ".");
                        }
                    }
                }

                sb.AppendLine("");
            }

[Andrey]

Hi Rod Yager,

The Text property of the ItineraryItem contains XML fragment with description. So I would recommend you to use standard .NET features to read and parse it. For example:

// Load Driving direction to the text.
StringBuilder sb = new StringBuilder();

NameTable nt = new NameTable();
XmlNamespaceManager mgr = new XmlNamespaceManager(nt);
mgr.AddNamespace("VirtualEarth", "http://BingMaps");

XmlParserContext pc = new XmlParserContext(nt, mgr, "", XmlSpace.Default);

foreach (RouteLeg leg in routeResponse.Result.Legs)
{
    foreach (ItineraryItem item in leg.Itinerary)
    {
        XmlReaderSettings xrs = new XmlReaderSettings();
        xrs.ConformanceLevel = ConformanceLevel.Fragment;

        XDocument doc = new XDocument(new XElement("root"));
        XElement root = doc.Descendants().First();

        using (StringReader fs = new StringReader(item.Text))
        {
            using (XmlReader xr = XmlReader.Create(fs, xrs, pc))
            {
                while (xr.Read())
                {
                    if (xr.NodeType == XmlNodeType.Element)
                    {
                        XElement description = XElement.Load(xr.ReadSubtree());
                        sb.Append(description.Value);
                        sb.Append(" ");
                    }
                }
            }
        }
        sb.AppendLine("");
    }
    sb.AppendLine("");
}

this.drivingDirection.Text = sb.ToString();

Using this approach you can easy add some additional processing for loaded XML elements if necessary.

Greetings,
Andrey Murzov
the Telerik team