使用OleDbConnection连接到SQL失败

Question

I'm connecting to a remote SQL database using the OleDbConnection but it's failing.

var connection = new OleDbConnection
{
    ConnectionString = "Provider=SQLOLEDB;server=MyRemoteIPAddress;Initial Catalog=MyDatabase;User ID=sa;Password=MyPassword"
};

try
{
    connection.Open();
    connection.Close();
}
catch (Exception ex)
{
    Console.WriteLine(ex.ToString());
}

The error I am getting is : [DBNETLIB][ConnectionOpen (Invalid Instance()).]Invalid connection.

However if I connect using SqlConnection, it connects ok.

var testConnection = new SqlConnection
{
    ConnectionString = "server=MyIPAddress;database=MYDatabase;user id=MyUser;pwd=MyPassword"
};

try
{
    testConnection.Open();
    testConnection.Close();
}
catch (Exception ex)
{
    Console.WriteLine(ex.ToString());
}

Why can i connect via SqlConnection and not OleDbConnection?

Answer 1

The environment is not clustered but explicitly specifying the port fixed the issue.

This worked :

"Provider=SQLOLEDB;server=MyRemoteIPAddress,1433;Initial Catalog=MyDatabase;User ID=sa;Password=MyPassword"

Answer 2

Try using a server side code which does all the required functions. so that your application does not directly talk with the remote database. Ping me for further assistance.

Answer 3

you should specify the port 1433 when using OLEDB

Provider=SQLOLEDB;server=MyRemoteIPAddress,1433;Initial 
Catalog=MyDatabase;User ID=sa;Password=MyPassword;