GeoCoordinate.Unknown Feld

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 

Feldwert

Beispiele

Im folgenden Codebeispiel wird überprüft, ob die GeoCoordinate Position entspricht, bevor der Breiten- und Längengrad gedruckt wird Unknown .

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)
            {
                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

Hinweise

Die IsUnknown Eigenschaft kann verwendet werden, um zu überprüfen, ob keine GeoCoordinate Daten enthalten sind.