GeoCoordinate.Unknown Bidang

Definisi

Ruang nama:

System.Device.Location

Rakitan:

System.Device.dll

GeoCoordinate Mewakili objek yang memiliki bidang lintang dan bujur yang tidak diketahui.

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 

Nilai Bidang

GeoCoordinate

Contoh

Contoh kode berikut memverifikasi apakah GeoCoordinate yang sesuai dengan lokasi adalah Unknown sebelum mencetak garis lintang dan bujurnya.

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

Keterangan

Properti IsUnknown dapat digunakan untuk memverifikasi apakah GeoCoordinate tidak berisi data.