public void SendMessage(string routeName, string payload)
        {
            if (string.IsNullOrWhiteSpace(CurrentServer))
            {
                throw new InvalidOperationException(ERROR_SERVER_IS_NOT_DEFINED);
            }

            Guid   handle = SqlScripts.ExecuteScalar <Guid>(ConnectionString, SqlScripts.SelectDialogHandleScript(routeName));
            string sql    = SqlScripts.SendMessageToChannelScript();
            Dictionary <string, object> parameters = new Dictionary <string, object>();

            parameters.Add("handle", handle);
            parameters.Add("message", payload);
            SqlScripts.ExecuteScript(ConnectionString, sql, parameters);
        }