private static string BuildQueryString(ResizeOptions options) { var sb = new StringBuilder(); foreach (var(key, value) in options.ToParameters()) { if (sb.Length > 0) { sb.Append('&'); } else { sb.Append('?'); } sb.Append(key); sb.Append('='); sb.Append(Uri.EscapeDataString(value)); } return(sb.ToString()); }