GeoCoordinate.Unknown Field

Reference

Definition

Namespace:: System.Device.Location

Assembly:: System.Device.dll

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Represents a GeoCoordinate object that has unknown latitude and longitude fields.

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

Field Value

GeoCoordinate

Examples

The following code example verifies whether the GeoCoordinate that corresponds to a location is Unknown before printing out its latitude and longitude.

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

Remarks

The IsUnknown property can be used to verify whether a GeoCoordinate contains no data.

Applies to

Jaa