How to add Failover Partner to a connection string in VB.NET

Question

I have a windows application connecting to Database to read some data. Since the database is setup for resilience, my application needs to connect to one of the two database

Answer 1

Check connectionstrings.com:

Database mirroring
If you connect with ADO.NET or the SQL Native Client to a database that is being mirrored, your application can take advantage of the drivers ability to automatically redirect connections when a database mirroring failover occurs. You must specify the initial principal server and database in the connection string and the failover partner server.

Data Source=myServerAddress;Failover Partner=myMirrorServerAddress;Initial
Catalog=myDataBase;Integrated Security=True;

There is ofcourse many other ways to write the connection string using database mirroring, this is just one example pointing out the failover functionality. You can combine this with the other connection strings options available.