GeoCoordinate.Unknown Campo

Definición

Espacio de nombres:

System.Device.Location

Ensamblado:

System.Device.dll

Representa un objeto GeoCoordinate con campos desconocidos de latitud y longitud.

public: static initonly System::Device::Location::GeoCoordinate ^ Unknown;

public static readonly System.Device.Location.GeoCoordinate Unknown;

 staticval mutable Unknown : System.Device.Location.GeoCoordinate

Public Shared ReadOnly Unknown As GeoCoordinate 

Valor de campo

GeoCoordinate

Ejemplos

En el ejemplo de código siguiente se comprueba si el GeoCoordinate objeto que corresponde a una ubicación es Unknown antes de imprimir su latitud y longitud.

using System;
using System.Device.Location;

namespace GetLocationPropertyHandleUnknown
{
    class Program
    {
        static void Main(string[] args)
        {
            GetLocationPropertyHandleUnknown();
        }

        static void GetLocationPropertyHandleUnknown()
        {
            GeoCoordinateWatcher watcher = new GeoCoordinateWatcher();
            watcher.TryStart(false, TimeSpan.FromMilliseconds(1000));

            if (watcher.Position.Location.IsUnknown != true)
            {
                GeoCoordinate coord = watcher.Position.Location;

                Console.WriteLine("Lat: {0}, Long: {1}",
                    coord.Latitude,
                    coord.Longitude);
            }
            else
            {
                Console.WriteLine("Unknown");
            }
        }
    }
}

Imports System.Device.Location

Module GetLocationProperty
    Public Sub GetLocationPropertyHandleUnknown()
        Dim watcher As New System.Device.Location.GeoCoordinateWatcher()
        watcher.TryStart(False, TimeSpan.FromMilliseconds(1000))
        If watcher.Position.Location.IsUnknown <> True Then
            Dim coord As GeoCoordinate = watcher.Position.Location
            Console.WriteLine("Lat: {0}, Long: {1}", coord.Latitude, coord.Longitude)
        Else
            Console.WriteLine("Unknown latitude and longitude.")
        End If
    End Sub

    Public Sub Main()
        GetLocationPropertyHandleUnknown()
        Console.ReadLine()
    End Sub

End Module

Comentarios

La IsUnknown propiedad se puede usar para comprobar si un GeoCoordinate objeto no contiene datos.