Calculating distances from latitude and longitude

[Ker]

I am doing a silverlight bing map application. In the application it have two textboxes and one button. Does anyone know how to make it to C# code when user input latitude and longitude of two places, and find out the distance between them.

[Andrey]

Hi Ker,

You can use LocationRect object for calculating distance between two locations. The sample code is the following:

Location location1 = new Location(37.7040701207995, -121.882780875908);
Location location2 = new Location(37.7140701207995, -121.872780875908);

Location northEast = new Location(
    Math.Max(location1.Latitude, location2.Latitude),
    Math.Max(location2.Longitude, location2.Longitude));

Location southWest = new Location(
    Math.Min(location1.Latitude, location2.Latitude),
    Math.Min(location1.Longitude, location2.Longitude));

LocationRect rect = new LocationRect(northEast, southWest);
rect.MapControl = this.radMap;

double distance = Math.Sqrt(rect.Width * rect.Width + rect.Height * rect.Height);

Kind regards,
Andrey Murzov
the Telerik team