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GeoCoordinateWatcher.TryStart Method

Initiates the acquisition of data from the current location provider. This method returns synchronously.

Namespace:  System.Device.Location
Assembly:  System.Device (in System.Device.dll)

public bool TryStart(
	bool suppressPermissionPrompt,
	TimeSpan timeout
)

Parameters

suppressPermissionPrompt
Type: System.Boolean
true to suppress the permission dialog box; false to display the permission dialog box.
timeout
Type: System.TimeSpan
Time in milliseconds to wait for the location provider to start before timing out.

Return Value

Type: System.Boolean
true if data acquisition is started within the time period specified by timeout; otherwise, false.

Implements

IGeoPositionWatcher<T>.TryStart(Boolean, TimeSpan)

This method blocks execution of the calling thread during the time period specified by timeout. Use caution when calling TryStart from the user interface thread of your application.

The following example demonstrates how to call TryStart.


using System;
using System.Device.Location;

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

        static void GetLocationProperty()
        {
            GeoCoordinateWatcher watcher = new GeoCoordinateWatcher();

            // Do not suppress prompt, and wait 1000 milliseconds to start.
            watcher.TryStart(false, TimeSpan.FromMilliseconds(1000));

            GeoCoordinate coord = watcher.Position.Location;

            if (coord.IsUnknown != true)
            {
                Console.WriteLine("Lat: {0}, Long: {1}",
                    coord.Latitude,
                    coord.Longitude);
            }
            else
            {
                Console.WriteLine("Unknown latitude and longitude.");
            }
        }
    }
}


.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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