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GeoCoordinate.Unknown Field
.NET Framework (current version)
Represents a GeoCoordinate object that has unknown latitude and longitude fields.
Assembly: System.Device (in System.Device.dll)
Field Value
Type: System.Device.Location.GeoCoordinateThe IsUnknown property can be used to verify whether a GeoCoordinate contains no data.
The following code example verifies whether the GeoCoordinate that corresponds to a location is Unknown before printingout its latitude and longitude.
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
.NET Framework
Available since 4.0
Windows Phone Silverlight
Available since 7.0
Available since 4.0
Windows Phone Silverlight
Available since 7.0
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