CivicAddressResolver.ResolveAddressAsync(GeoCoordinate) Méthode
Définition
Important
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Résout une adresse de manière asynchrone à partir d’un emplacement basé sur une latitude et une longitude. L’appel ne bloque pas l’exécution du thread appelant pendant que l’adresse est résolue.
public:
virtual void ResolveAddressAsync(System::Device::Location::GeoCoordinate ^ coordinate);
public void ResolveAddressAsync (System.Device.Location.GeoCoordinate coordinate);
abstract member ResolveAddressAsync : System.Device.Location.GeoCoordinate -> unit
override this.ResolveAddressAsync : System.Device.Location.GeoCoordinate -> unit
Public Sub ResolveAddressAsync (coordinate As GeoCoordinate)
Paramètres
- coordinate
- GeoCoordinate
GeoCoordinate contenant la localisation à convertir en adresse postale.
Implémente
Exceptions
coordinate
a la valeur null
.
coordinate
ne contient pas de latitude et de longitude valides.
Exemples
Le programme suivant montre comment appeler ResolveAddressAsync pour résoudre une adresse civique de manière asynchrone.
using System;
using System.Device.Location;
namespace ResolveAddressSync
{
class AsyncProgram
{
public static void Main(string[] args)
{
ResolveAddressAsync();
}
static void ResolveAddressAsync()
{
GeoCoordinateWatcher watcher = new GeoCoordinateWatcher(GeoPositionAccuracy.High);
bool started = false;
watcher.MovementThreshold = 1.0; // set to one meter
started = watcher.TryStart(false, TimeSpan.FromMilliseconds(1000));
if (started)
{
CivicAddressResolver resolver = new CivicAddressResolver();
resolver.ResolveAddressCompleted += new EventHandler<ResolveAddressCompletedEventArgs>(resolver_ResolveAddressCompleted);
if (watcher.Position.Location.IsUnknown == false)
{
resolver.ResolveAddressAsync(watcher.Position.Location);
}
}
}
static void resolver_ResolveAddressCompleted(object sender, ResolveAddressCompletedEventArgs e)
{
if (!e.Address.IsUnknown)
{
Console.WriteLine("Country: {0}, Zip: {1}",
e.Address.CountryRegion,
e.Address.PostalCode);
}
else
{
Console.WriteLine("Unknown address.");
}
}
}
}
Imports System.Device.Location
Module ResolveCivicAddressAsync
Public Sub ResolveCivicAddressAsync()
Dim watcher As GeoCoordinateWatcher
watcher = New System.Device.Location.GeoCoordinateWatcher(GeoPositionAccuracy.High)
Dim started As Boolean = False
watcher.MovementThreshold = 1.0 'set to one meter
started = watcher.TryStart(False, TimeSpan.FromMilliseconds(1000))
If started Then
Dim resolver As CivicAddressResolver = New CivicAddressResolver()
AddHandler resolver.ResolveAddressCompleted, AddressOf resolver_ResolveAddressCompleted
If Not watcher.Position.Location.IsUnknown Then
resolver.ResolveAddressAsync(watcher.Position.Location)
End If
End If
watcher.Start()
End Sub
Sub resolver_ResolveAddressCompleted(ByVal sender As Object, ByVal e As ResolveAddressCompletedEventArgs)
If Not e.Address.IsUnknown Then
Console.WriteLine("Country: {0}, Zip: {1}",
e.Address.CountryRegion,
e.Address.PostalCode)
Else
Console.WriteLine("Unknown address.")
End If
End Sub
Public Sub Main()
ResolveCivicAddressAsync()
Console.WriteLine("Enter any key to quit.")
Console.ReadLine()
End Sub
End Module
Remarques
Cette méthode stocke dans la tâche toutes les exceptions de non-utilisation que l’équivalent synchrone de la méthode peut lever. Si une exception est stockée dans la tâche retournée, cette exception sera levée lorsque la tâche est attendue. Les exceptions d’utilisation, telles que ArgumentException, sont toujours levées de manière synchrone. Pour connaître les exceptions stockées, consultez les exceptions levées par ResolveAddress(GeoCoordinate).