NHibernate : recover session after connection lost

问题

I'm using NHibernate with SQL Server 2005 in a WPF client application.

If I manually stop the SQL Server service and then restart it the session doesn't automatically reconnect.

So far I'm doing this witch seems to work :

try
{
    using (ITransaction transaction = this.Session.BeginTransaction())
    {
        // some select here
    }
}catch(Exception ex)
{                
    if(this.Session.Connection.State == ConnectionState.Closed)
    {
        try
        {
            this.Session.Connection.Open();
        }
        catch (Exception)
        {
        }
    }
}

Is there a better way ?

回答1:

NHibernate won't handle connection drops for you. For occasionally connected scenarios like this I'd look into using a local database as suggested in this question, and then use the Microsoft Sync Framework to synchronize the local and central databases. Also see this related question.

回答2:

If the server just stops, I think there are other problems. I don't have any experience in WPF but there are a lot of questions related to nhibernate / WPF (SO query).

If the database connections drops sometimes you may take a look at the UnitOfWork pattern.

来源：https://stackoverflow.com/questions/2912048/nhibernate-recover-session-after-connection-lost