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为什么我在UPDATE语句中收到"语法错误".例外?

 public void EditUser(string id, string userid, string email, string password)
    {
        try
        {
            _dbConn.Open();

            OleDbCommand updateCmd = new OleDbCommand("UPDATE LOGINS SET Username=?, Password=?, Email=? WHERE ID=?", _dbConn);


            OleDbParameter param1 = new OleDbParameter("Username", userid);
            OleDbParameter param2 = new OleDbParameter("Password", password);
            OleDbParameter param3 = new OleDbParameter("Email", email);
            OleDbParameter param4 = new OleDbParameter("ID", id);

            param1.DbType = DbType.AnsiString;
            param1.Direction = ParameterDirection.Input;
            param2.DbType = DbType.AnsiString;
            param2.Direction = ParameterDirection.Input;
            param3.DbType = DbType.AnsiString;
            param3.Direction = ParameterDirection.Input;
            param4.DbType = DbType.AnsiString;
            param4.Direction = ParameterDirection.Input;

            updateCmd.Parameters.Add(param1);
            updateCmd.Parameters.Add(param2);
            updateCmd.Parameters.Add(param3);
            updateCmd.Parameters.Add(param4);


            int …
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c# sql oledb ms-access-2007

0
推荐指数
1
解决办法
318
查看次数

编写这段代码的有效方法

有经验的程序员怎么写这个...

SummonerPlatform = (SummonerRegion == Region.br) ? SummonerPlatform = Platform.BR1 : (SummonerRegion == Region.eune) ? SummonerPlatform = Platform.EUN1 :
                                (SummonerRegion == Region.euw) ? SummonerPlatform = Platform.EUW1 : (SummonerRegion == Region.kr) ? SummonerPlatform = Platform.KR :
                                (SummonerRegion == Region.lan) ? SummonerPlatform = Platform.LA1 : (SummonerRegion == Region.las) ? SummonerPlatform = Platform.LA2 :
                                (SummonerRegion == Region.na) ? SummonerPlatform = Platform.NA1 : (SummonerRegion == Region.oce) ? SummonerPlatform = Platform.OC1 :
                                (SummonerRegion == Region.ru) ? SummonerPlatform = Platform.RU : (SummonerRegion == Region.tr) ? SummonerPlatform …
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c# performance

0
推荐指数
1
解决办法
73
查看次数

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c# ×2

ms-access-2007 ×1

oledb ×1

performance ×1

sql ×1