Question

我创建了一个连接到服务器以从数据库中检索数据的系统，但是我得到了＃34;类型＆＃39; System.TimeoutException＆＃39;未处理的异常。发生在MySql.Data.dll＆＃34; ...

如果我连接到localhost就一切都很好....

    string StrCon = string.Format("Server= Cant tell you ; database={0};UID= cant tell you ; password='cant tell you '", "cant tell you");
        MySqlConnection Connection = new MySqlConnection(StrCon);

        while (true)
        {
            //MySqlConnection Connection = null;
            Console.WriteLine("not connected");
            Connection.Open();
            Console.WriteLine("connected");
            string Query = "SELECT * FROM lat_long WHERE ID=1";
            MySqlCommand cmd = new MySqlCommand(Query, Connection);
            MySqlDataReader dr = cmd.ExecuteReader();

Answer 1

确保主机上的防火墙未打开和/或mysql服务器绑定到0.0.0.0或接口地址 - 如果它绑定到127.0.0.1/::1，服务器将无法通过网络访问

C＃不会打开连接

1 个答案: