public static async Task <sellerRequest> readSellerRequest(int id)
        {
            sellerRequest request = new sellerRequest();
            await databaseManager.selectQuery("SELECT * FROM sellerrequests WHERE userId = @id", delegate(DbDataReader reader)
            {
                if (reader.HasRows)
                {
                    request.username    = (String)reader["username"];
                    request.age         = (int)reader["age"];
                    request.date        = (DateTime)reader["date"];
                    request.userId      = (int)reader["userId"];
                    request.nationality = (string)reader["nationality"];
                    request.description = (string)reader["description"];
                    request.question    = (string)reader["question"];
                    request.phoneNumber = (string)reader["phoneNumber"];
                }
            }).addValue("@id", id).Execute();

            return(request);
        }
        public static async Task <List <sellerRequest> > readAllSellerRequests()
        {
            List <sellerRequest> dataToReturn = new List <sellerRequest>();

            await databaseManager.selectQuery("SELECT * FROM sellerrequests", delegate(DbDataReader reader)
            {
                if (reader.HasRows)
                {
                    sellerRequest request = new sellerRequest();
                    request.username      = (String)reader["username"];
                    request.age           = (int)reader["age"];
                    request.nationality   = (string)reader["nationality"];
                    request.description   = (string)reader["description"];
                    request.userId        = (int)reader["userId"];
                    request.date          = (DateTime)reader["date"];
                    request.question      = (string)reader["question"];

                    dataToReturn.Add(request);
                }
            }).Execute();

            return(dataToReturn);
        }