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How do I get the driving distance of two addresses?

This is a discussion on How do I get the driving distance of two addresses? within the MapPoint 2006/2009 Discussion forums, part of the Map Forums category; How do I get the driving distance of two addresses using MapPoint 2004 COM Interface in C#.NET? I have already ...


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Old 01-04-2006
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How do I get the driving distance of two addresses?
How do I get the driving distance of two addresses using MapPoint 2004 COM Interface in C#.NET?

I have already added the reference to MapPoint COM inteface to the project.

Below is my code which retrieves the distance (NOT Driving distance) between two locations:
Code:
        try{
            if (this.mappointApplication == null) throw new Exception("Failed to create an object instance of MapPoint.MappointControlClass()");
            MapPoint.FindResults loResultsFrom = this.mappointApplication.ActiveMap.FindAddressResults(
                stringFromAddress,
                stringFromCity,
                stringFromOtherCity,
                stringFromRegion,
                stringFromPostalCode,
                stringFromCountry);
            if (loResultsFrom.ResultsQuality == MapPoint.GeoFindResultsQuality.geoAllResultsValid ||
                loResultsFrom.ResultsQuality == MapPoint.GeoFindResultsQuality.geoFirstResultGood)
            {
                MapPoint.FindResults loResultsTo = this.mappointApplication.ActiveMap.FindAddressResults(
                    stringToAddress,
                    stringToCity,
                    stringToOtherCity,
                    stringToRegion,
                    stringToPostalCode,
                    stringToCountry);
                if (loResultsTo.ResultsQuality == MapPoint.GeoFindResultsQuality.geoAllResultsValid ||
                    loResultsTo.ResultsQuality == MapPoint.GeoFindResultsQuality.geoFirstResultGood)
                {
                    object index = 1;
                    MapPoint.Location loFrom = (MapPoint.Location)loResultsFrom.get_Item(ref index);
                    MapPoint.Location loTo = (MapPoint.Location)loResultsTo.get_Item(ref index);
                    ldDistance = loTo.DistanceTo(loFrom);
                }
                else
                {
                    throw new Exception("To address is not a valid one. Result Quality: " + loResultsTo.ResultsQuality.ToString());
                }
            }
            else
            {
                throw new Exception("From address is not a valid one. Result Quality: " + loResultsFrom.ResultsQuality.ToString());
            }
        }
        catch (Exception loExp)
        {
            string lcMessage = loExp.Message + ((char)13).ToString()
                            + loExp.Source + ((char)13).ToString()
                            + loExp.StackTrace + ((char)13).ToString()
                            + loExp.Source + ((char)13).ToString();
            EventLog.WriteLog(loExp);
            while (loExp.InnerException != null)
            {
                EventLog.WriteLog(loExp);
            }
        }
        return ldDistance;
How do I modify this code to get the driving distance of the two locations?

TIA
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Old 01-08-2006
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Hi Dawa,

Your code is calculating the great circle distance between the two points, but to get MapPoint to tell you the driving distance, you'll have to get it to calculate the route between the two points first.

After you create the location objects using FindAddressResults() method, use the ActiveMap.ActiveRoute.Waypoints.Add method to add these locations to the route, then call the .Calculate method to do all the calculations.

The VB example here gets the route distance and the route time (based on the default driving speeds) between your two location objects (loFrom and loTo).

Hope this helps.

Code:
        map.ActiveMap.ActiveRoute.Clear
        map.ActiveMap.ActiveRoute.Waypoints.Add loFrom
        map.ActiveMap.ActiveRoute.Waypoints.Add loTo
        
        map.ActiveMap.ActiveRoute.Calculate
        
        nRouteDistance = map.ActiveMap.ActiveRoute.Distance
        nRouteTime = map.ActiveMap.ActiveRoute.DrivingTime * 24 * 60     '   convert to minutes
        
        map.ActiveMap.ActiveRoute.Clear
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Old 04-15-2008
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Re: How do I get the driving distance of two addresses?
Am new to vba but would like to do what you've done here? Can anyone give me an idiots guide?
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Old 04-16-2008
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Join Date: Nov 2004
Posts: 2,112
Re: How do I get the driving distance of two addresses?
Hi,

It looks you use the object model. Converting from VB to C# is only a little syntax difference. Something like this should work for you:

Code:
MapPoint.ActiveRoute.Clear;
MapPoint.ActiveRoute.Waypoints.Add(loFrom);
MapPoint.ActiveRoute.Waypoints.Add(locTo);
MapPoint.ActiveRoute.Calculate();
double RouteDistance = MapPoint.ActiveRoute.Distance;
double RouteTime = MapPoint.ActiveRoute.DrivingTime * 24 * 60;
MapPoint.ActiveRoute.Clear();
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Old 04-16-2008
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Join Date: Nov 2006
Posts: 2
Re: How do I get the driving distance of two addresses?
Thank you for your reply. I've only ever used vba for excel macros- I could do with an idiots guide. Any chance you could brek it down for me? How do I create an object model? Sorry to be a pain! I would be very grateful
Kind regards
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Old 04-18-2008
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Posts: 2,112
Re: How do I get the driving distance of two addresses?
Hi,

You use the object model witch is using the type library and another way is to use the activex component. The ActiveMap property of the control is the mapoint object.
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