SqlConnection sqlConnection1 = new SqlConnection(MainWindow.g_strConn);
            Object returnValue;

            //commend data 생성
            MySqlCommand cmd = new SqlCommand();
            cmd.Connection = MainWindow.g_MySqlConn;
            cmd.CommandText = "LoginAuthentication";
            cmd.CommandType = CommandType.StoredProcedure;

            //파라메터로 넣을 값들 정의
            MySqlParameter parameter = new MySqlParameter();
            parameter.ParameterName = "@User_ID";
            parameter.MySqlDbType = MySqlDbType.VarChar;
            parameter.Direction = ParameterDirection.Input;
            parameter.Value = Id;

            MySqlParameter parameter2 = new MySqlParameter();
            parameter2.ParameterName = "@User_Pwd";
            parameter2.MySqlDbType = MySqlDbType.VarChar;
            parameter2.Direction = ParameterDirection.Input;
            parameter2.Value = Pw;

            cmd.Parameters.Add(parameter);
            cmd.Parameters.Add(parameter2);

            MainWindow.g_MySqlConn.Open();

            returnValue = cmd.ExecuteScalar();

            MainWindow.g_MySqlConn.Close();