地址之间的距离 [英] Distance between addresses

问题描述

有没有办法让通过谷歌地图计算出的2个地址之间的距离？
如何？

Is there a way to have a distance between 2 addresses calculated by Google Maps? How?

推荐答案

如果你只是有两个addreses首先尝试的天气预报然后有很多方法来获得之间的距离

If you just have two addreses first try to get lat lan by GEOCODING and then there are many methods to get distance in between.

或

如果你不需要编码和希望的 CS SOLUTION 试试这个：

if you dont need geocoding and want a CS SOLUTION try this :

public int getDistance(string origin, string destination)
{
    System.Threading.Thread.Sleep(1000);
    int distance = 0;
    //string from = origin.Text;
    //string to = destination.Text;
    string url = "http://maps.googleapis.com/maps/api/directions/json?origin=" + origin + "&destination=" + destination + "&sensor=false";
    string requesturl = url;
    //string requesturl = @"http://maps.googleapis.com/maps/api/directions/json?origin=" + from + "&alternatives=false&units=imperial&destination=" + to + "&sensor=false";
    string content = fileGetContents(requesturl);
    JObject o = JObject.Parse(content);
    try
    {
        distance = (int)o.SelectToken("routes[0].legs[0].distance.value");
        return distance;
    }
    catch
    {
        return distance;
    }
    return distance;
    //ResultingDistance.Text = distance;
}

    protected string fileGetContents(string fileName)
    {
        string sContents = string.Empty;
        string me = string.Empty;
        try
        {
            if (fileName.ToLower().IndexOf("http:") > -1)
            {
                System.Net.WebClient wc = new System.Net.WebClient();
                byte[] response = wc.DownloadData(fileName);
                sContents = System.Text.Encoding.ASCII.GetString(response);

            }
            else
            {
                System.IO.StreamReader sr = new System.IO.StreamReader(fileName);
                sContents = sr.ReadToEnd();
                sr.Close();
            }
        }
        catch { sContents = "unable to connect to server "; }
        return sContents;
    }

或

如果你不想与谷歌的混乱，只需要送风距离远，试试这个：

if you dont want to mess with google and need only AIR DISTANCE,Try this :

public decimal calcDistance(decimal latA, decimal longA, decimal latB, decimal longB)
{

    double theDistance = (Math.Sin(DegreesToRadians(latA)) *
            Math.Sin(DegreesToRadians(latB)) +
            Math.Cos(DegreesToRadians(latA)) *
            Math.Cos(DegreesToRadians(latB)) *
            Math.Cos(DegreesToRadians(longA - longB)));

    return Convert.ToDecimal((RadiansToDegrees(Math.Acos(theDistance)))) * 69.09M * 1.6093M;
}

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