/// <summary>
/// Downloads the content of the accept or decline Url.
/// </summary>
/// <param name="uri">The URI.</param>
/// <param name="payment">The payment.</param>
/// <returns></returns>
/// <remarks>This method converts the HTML page of the accept or decline url into a string.
/// Instead of rederecting Authorize.NET in the <see cref="ProcessCallback"/>, we write the HTML page directly to them
/// in their request. This method Returns the string to write to Authorize.NET.
/// </remarks>
private string DownloadPageContent(Uri uri, Payment payment)
{
var client = new WebClient();
var requestedHtml = client.DownloadData(uri.AddOrderGuidParameter(payment.PurchaseOrder));
var encoding = new UTF8Encoding();
return(encoding.GetString(requestedHtml));
}
