c＃和MySQL从db和utf-8表中选择字符串

Question

that the code i use to create Connection with the datebase

private static string MySqlUsername, MySqlPassword, MySqlDatabase, MySqlHost;
        private static string ConnectionString;
        public static void CreateConnection(string user, string password, string database, string host)
        {
            MySqlUsername = user;
            MySqlHost = host;
            MySqlPassword = password;
            MySqlDatabase = database;
            ConnectionString = "Server=" + MySqlHost + ";Database='" + MySqlDatabase + "';Username='" + MySqlUsername + "';Password='" + MySqlPassword + "';Pooling=true; Max Pool Size = 160000; Min Pool Size = 0;CHARSET=utf8";
        }
        public static MySql.Data.MySqlClient.MySqlConnection MySqlConnection
        {
            get
            {
                MySql.Data.MySqlClient.MySqlConnection conn = new MySql.Data.MySqlClient.MySqlConnection();
                conn.ConnectionString = ConnectionString;
                return conn;
            }
        }

my problem is when i select string from utf-8 datebase with that code

public void accf()
        {
            MySqlCommand cmd = new MySqlCommand(MySqlCommandType.SELECT);
            cmd.Select("med").Where("Name", MName.Text).Or("UID", MUID.Text).Execute();
            MySqlReader r = new MySqlReader(cmd);
            if (r.Read())
            {
                CharName.Text = r.ReadString("Name");
            }
            else
            {
                fnf.ForeColor = Color.Red;
                fnf.Text = "can't found anything";
                fnf.Visible = true;
            }
        }

whatever the string at Name was number it can read it but when it was anyname the program told me that can't found anything and here is the table

DROP TABLE IF EXISTS `med`;
CREATE TABLE `med` (
  `Name` varchar(16) CHARACTER SET utf8 NOT NULL,
  `UID` bigint(18) unsigned NOT NULL,
  `Substance` varchar(45) CHARACTER SET utf8 NOT NULL,
  `Expiry` date DEFAULT NULL,
  `Type` tinyint(5) unsigned DEFAULT '10',
  `Note` varchar(18) DEFAULT NULL,
  PRIMARY KEY (`UID`)
) ENGINE=MyISAM DEFAULT CHARSET=latin1;

sorry for bad English i hope that can help to solve my problem

Answer 1

如果表返回的行多，则可以尝试使用ExecuteScalar()而不是Execute() 。