代碼：using System;using System.Collections.Generic;using System.Linq;using System.Text;using MODEL;using MySql.Data.MySqlClient;using MySQLDriverCS;namespace DAL{public class Dal{public static int getUserInformation(UserInformation user){MySqlConnection con = new MySql.Data.MySqlClient.MySqlConnection("Database='salesmis';Data Source='localhost';User Id='root';Password='123456';charset='utf8'");con.Open();MySqlCommand cmd = new MySqlCommand();cmd.Connection = con;cmd.CommandText = "select count(*) from userlogin where username=@name and password=@pwd";cmd.Parameters.Add(new MySQLParameter("@name", user.getUserName()));cmd.Parameters.Add(new MySQLParameter("@pwd", user.getPassword()));String name = user.getUserName();string pwd = user.getPassword();int count = Convert.ToInt32(cmd.ExecuteScalar());return count；}}}注：本人采用三層架構模式來連接Mysql數據庫，這是Dal層，這要是獲取數據庫salesmis中user的信息并提交給login函數處理。編譯后，系統(tǒng)提示：“一個未處理的異常類型的MySql.Data.MySqlClient。 發(fā)生在MySql.Data.dll MySqlException”附加信息:只有MySqlParameter對象可以存儲拋出”錯誤指向這幾行代碼：cmd.Parameters.Add(new MySQLParameter("@name", user.getUserName()));cmd.Parameters.Add(new MySQLParameter("@pwd", user.getPassword()))本人在此跪求各位英雄好漢幫忙解答一下，萬分感謝