testnotion.cs

class Program
    {
        static async Task Main(string[] args)
        {
            var client = new NotionClient(new ClientOptions
            {
                AuthToken = "secret_d6dNtdaIffTAGhDXRhha4ddsdsy0dAfsr27ct3acszPnNOmGIY"
            });
            var databasesQueryParameters = new DatabasesQueryParameters();
            var databaseId = "8a71f62d45aaf24e8dbdsdsd9090f703181e33";
            var queryResult = await client.Databases.QueryAsync(databaseId,databasesQueryParameters);
            Console.WriteLine(queryResult.Results.Count);
            foreach (var result in queryResult.Results)
            {
                Console.WriteLine("Page Id: " + result.Id);
                foreach (var property in result.Properties)
                {
                    Console.WriteLine(property.Key + " " + GetValue(property.Value));
                }
            }
            Console.ReadKey();
        }
        static object GetValue(PropertyValue p)
        {
            switch (p)
            {
                case RichTextPropertyValue richTextPropertyValue:
                    return richTextPropertyValue.RichText.FirstOrDefault()?.PlainText;
                default:
                    return null;
            }
        }
    }