Code:
 string sConnection = "Data Source=192.168.0.41,1433;Initial Catalog=popis;Integrated Security=SSPI;Connection Timeout=5;";
            string sSQL = "SELECT * FROM artikli ";
            SqlCommand comm = new SqlCommand(sSQL, new SqlConnection(sConnection));

            try
            {
                comm.Connection.Open();
            }
            catch (Exception ex)
            {
                Console.WriteLine("An error occurred: '{0}'", ex);
            }

Code:
public SqlConnection konekcija = new SqlConnection("User ID=sa;Password=sa;Data Source=192.168.4.1;Initial Catalog=baza");

Code:
public SqlConnection konekcija = new SqlConnection("  Data Source=192.168.4.1,1433;Initial Catalog=baza;Integrated Security = False ;User ID=sa;Password=sa;");