private void RequestImageryMetadata()
{
    try
    {
        // Set a Bing Maps key before making a request
        string key = "Bing Maps Key";
        
        ImageryService.ImageryMetadataRequest metadataRequest = new ImageryService.ImageryMetadataRequest();

        // Set credentials using a valid Bing Maps Key
        metadataRequest.Credentials = new ImageryService.Credentials();
        metadataRequest.Credentials.ApplicationId = key;

        // Set the imagery metadata request options
        ImageryService.Location centerLocation = new ImageryService.Location();
        centerLocation.Latitude = 47.65;
        centerLocation.Longitude = -122.24;

        metadataRequest.Options = new ImageryService.ImageryMetadataOptions();
        metadataRequest.Options.Location = centerLocation;
        metadataRequest.Options.ZoomLevel = 10;

        metadataRequest.Style = ImageryService.MapStyle.AerialWithLabels;
        
        // Make the imagery metadata request 
        ImageryService.ImageryServiceClient imageryService = new ImageryService.ImageryServiceClient();
        ImageryService.ImageryMetadataResponse metadataResponse = imageryService.GetImageryMetadata(metadataRequest);
        
        Results.Text = "The image requested was created between " + metadataResponse.Results[0].Vintage.From.ToString() + " and " + metadataResponse.Results[0].Vintage.To.ToString();
        
    }
    catch (Exception ex)
    {
        Results.Text = "An exception occurred: " + ex.Message;

    }
}