在C＃应用程序npgsql麻烦 - 一个现有的连接被强行关闭远程主机

我想从C＃程序打开我的PostgreSQL数据库时，收到以下错误：

I am getting the following error when trying to open my Postgresql database from a C# utility:

System.IO.IOException：无法读取来自运输
连接数据：一个现有的连接被强行远程
主机关闭。 ---> System.Net.Sockets.SocketException：一个现有的连接
被强行关闭远程主机

System.IO.IOException: Unable to read data from the transport connection: An existing connection was forcibly closed by the remote host. ---> System.Net.Sockets.SocketException: An existing connection was forcibly closed by the remote host

我试图运行从远程计算机并在其上PostgreSQL服务器正在运行的计算机此程序。

I have tried running this program from a remote computer and from the computer on which the Postgresql server is running.

有一台计算机上没有防火墙在这一刻，我能够使用相同的密码通过Postgres的管理实用工具连接到数据库和服务器就好了。我已经检查了用户名有权限的数据库。

There are no firewalls on either computer at this moment and I am able to connect to the database and server just fine through the postgres admin utility using the same password. I have checked that the username has permissions to the database.

下面是我的连接代码：

public bool updateFromServer()
{
    try
    {
        NpgsqlConnection conn = new NpgsqlConnection(connString);
        conn.Open();
        conn.Close();
        return true;
    }
    catch (Exception e)
    {
        conn.close()
        return false;
    }
}

任何帮助，将不胜感激。

Any help with this would be appreciated.