您好：
參考下方網址
https://dotblogs.com.tw/dennismao/2012/11/13/82906
我有試過該帳密，可以連線，也用 udl可以連線

但就會出現
System.Data.SqlClient.SqlException: '使用者 'sa,Password=123456789' 的登入失敗。'
請問，這有哪一方是可以除錯嗎?
謝謝!

using System;
using System.Collections.Generic;
using System.Data.SqlClient;
using System.Linq;
using System.Web;

namespace m01.Models
{
    public class DBManager
    {
        private readonly string ConnStr = "Data Source=127.0.0.1;Initial Catalog=Northwind;Persist Security Info=True;User ID=sa,Password=123456789";
                 //const string db63_PTERP = "Data Source=127.0.0.1\\SQL2005;Initial Catalog=PT_ERP;Persist Security Info=True;User ID = sa; Password=12345";

        public List<Card> GetCards()
        {
            List<Card> cards = new List<Card>();
            SqlConnection sqlConnection = new SqlConnection(ConnStr);
            SqlCommand sqlCommand = new SqlCommand("SELECT * FROM card");
            sqlCommand.Connection = sqlConnection;
            sqlConnection.Open();

            SqlDataReader reader = sqlCommand.ExecuteReader();
            if (reader.HasRows)
            {
                while (reader.Read())
                {
                    Card card = new Card
                    {
                        ID = reader.GetInt32(reader.GetOrdinal("id")),
                        Char_name = reader.GetString(reader.GetOrdinal("char_name")),
                        Card_name = reader.GetString(reader.GetOrdinal("card_name")),
                        Card_level = reader.GetString(reader.GetOrdinal("card_level")),
                    };
                    cards.Add(card);
                }
            }
            else
            {
                Console.WriteLine("資料庫為空！");
            }
            sqlConnection.Close();
            return cards;
        }

    }//--CALSS