public DistributionCenter GetNearest(Address address) {
EcommercePlatformDataContext db = new EcommercePlatformDataContext();
DistributionCenter distcenter = new DistributionCenter();
try {
double earth = 3963.1676; // radius of Earth in miles
DCList d = (from dc in db.DistributionCenters
where dc.State1.countryID == address.State1.countryID
select new DCList {
ID = dc.ID,
distance = earth * (
2 * Math.Atan2(
Math.Sqrt((Math.Sin((Convert.ToDouble(dc.Latitude - address.latitude) * (Math.PI / 180)) / 2) * Math.Sin((Convert.ToDouble(dc.Latitude - address.latitude) * (Math.PI / 180)) / 2)) + ((Math.Sin((Convert.ToDouble(dc.Longitude - address.longitude) * (Math.PI / 180)) / 2)) * (Math.Sin((Convert.ToDouble(dc.Longitude - address.longitude) * (Math.PI / 180)) / 2))) * Math.Cos(Convert.ToDouble(address.latitude) * (Math.PI / 180)) * Math.Cos(Convert.ToDouble(dc.Latitude) * (Math.PI / 180))),
Math.Sqrt(1 - ((Math.Sin((Convert.ToDouble(dc.Latitude - address.latitude) * (Math.PI / 180)) / 2) * Math.Sin((Convert.ToDouble(dc.Latitude - address.latitude) * (Math.PI / 180)) / 2)) + ((Math.Sin((Convert.ToDouble(dc.Longitude - address.longitude) * (Math.PI / 180)) / 2)) * (Math.Sin((Convert.ToDouble(dc.Longitude - address.longitude) * (Math.PI / 180)) / 2))) * Math.Cos(Convert.ToDouble(address.latitude) * (Math.PI / 180)) * Math.Cos(Convert.ToDouble(dc.Latitude) * (Math.PI / 180))))
)
)
}).OrderBy(x => x.distance).First<DCList>();
distcenter = db.DistributionCenters.Where(x => x.ID == d.ID).First<DistributionCenter>();
} catch {
DCList d = (from dc in db.DistributionCenters
where dc.State1.countryID == address.State1.countryID
select new DCList {
ID = dc.ID,
distance = 0
}).OrderBy(x => x.distance).First<DCList>();
distcenter = db.DistributionCenters.Where(x => x.ID == d.ID).First<DistributionCenter>();
};
return distcenter;
}
private void detach_DistributionCenters(DistributionCenter entity)
{
this.SendPropertyChanging();
entity.State1 = null;
}
partial void UpdateDistributionCenter(DistributionCenter instance);
partial void DeleteDistributionCenter(DistributionCenter instance);
partial void InsertDistributionCenter(DistributionCenter instance);