/// <summary>
/// 数据库查询操作
/// </summary>
/// <param name="conn">数据库连接</param>
/// <param name="sql">查询语句</param>
/// <param name="parameters">参数列表化</param>
/// <returns>DataTable结果集</returns>
public DataTable Select(string conn, string sql, params MySqlParameter[] parameters)
{
return(MySqlHelp.Select(conn, sql, parameters));
}