var locationPermissions = new[]
{
    Manifest.Permission.AccessCoarseLocation,
    Manifest.Permission.AccessFineLocation
};
    // check if the app has permission to access coarse location
    var coarseLocationPermissionGranted =
        ContextCompat.CheckSelfPermission(this, Manifest.Permission.AccessCoarseLocation);
    // check if the app has permission to access fine location
    var fineLocationPermissionGranted =
         ContextCompat.CheckSelfPermission(this, Manifest.Permission.AccessFineLocation);
     // if either is denied permission, request permission from the user
    const int locationPermissionsRequestCode = 1000;
    if (coarseLocationPermissionGranted == Permission.Denied ||
        fineLocationPermissionGranted == Permission.Denied)
    {
        ActivityCompat.RequestPermissions(this, locationPermissions,
        locationPermissionsRequestCode);
    }```