问获取CS1502：<some_method>的最佳重载方法匹配包含一些无效参数

EN

<%@ WebService Language="C#" Class="Notifications" %>

using System;
using System.Web;
using System.Web.Services;
using System.Web.Script;
using System.Web.Script.Services;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Data.SqlClient;

public class Notification
{
    public int id;
    public string text;

    public Notification(int m_id, string m_text)
    {
        id = m_id;
        text = m_text;
    }

    public Notification() {}
}

[System.Web.Script.Services.ScriptService]
public class Notifications : System.Web.Services.WebService {
    List<Notification> Notification = new List<Notification>();

    [WebMethod()]
    public List<Notification> GetNotifications()
    {
        var notifications = new List<Notification>();

        using (SqlConnection objSQLConnection = new SqlConnection(System.Configuration.ConfigurationManager.AppSettings["connString"]))
        {
            using (SqlCommand objSQLCommand = new SqlCommand("select * from table1 where col1 = @user", objSQLConnection))
            {
                objSQLCommand.Parameters.Add("@user", SqlDbType.VarChar, 5).Value = "abc";

                objSQLConnection.Open();
                using (SqlDataReader objSQLDataReader = objSQLCommand.ExecuteReader())
                {

                    while (objSQLDataReader.Read())
                    {
                        notifications.Add(new Notification(objSQLDataReader["id"], objSQLDataReader["text"]));
                    }

                }
            }
        }

        return notifications;
    }

}

Compiler Error Message: CS1502: The best overloaded method match for 'Notification.Notification(int, string)' has some invalid arguments

notifications.Add(new Notification(objSQLDataReader["id"], objSQLDataReader["text"]));