The TCP/IP connection to the host localhost, port 1433 has failed. Error: "Connection refused: connect. Verify the connection properties, check that an instance of SQL Server is running on the host and accepting TCP/IP connections at the port, and that no firewall is blocking TCP connections to the port.
Kontrollera din SQL Server-inställning tillåt acceptera TCP/IP-anslutningar. Aktivera TCP/IP och starta om SQL Server. Testa sedan din kod igen.
