ado.net 连接mysql的类:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using MySql.Data;
using MySql.Data.MySqlClient;

namespace VideoSpider
{
    public class DBConn
    {
#if DEBUG
        private static   string _connectionString = @"server=61.164.149.180;User ID=sql_zuqiu;Password=FULFQcvuFsqnbQSL;database=zuqiu_bak;";
#else
        private static string _connectionString = @"server=localhost;User=11xs;Password=HPU3aMJVzECQfVXR;database=11xs";
#endif
        public static MySqlConnection OpenConnection( string connstr = "" )
        {

            if (connstr != "" )
            {
                _connectionString = connstr;
            }
            var conn = new MySqlConnection(_connectionString);
            conn.Open();
            return conn;
        }
    }
}