private void spSalgsTal(SalgsTal salgsTal, BilletType billetType)
 {
     using (SqlConnection connection = new SqlConnection(ConnectionString))
     {
         SqlCommand command = new SqlCommand();
         command.CommandText = "EXECUTE spSalgsTal @Bevægelse, @BilletType, @SalgsDato";
         command.Parameters.AddWithValue("@Bevægelse", salgsTal.Solgt);
         command.Parameters.AddWithValue("@BilletType", billetType.ID);
         command.Parameters.AddWithValue("@SalgsDato", salgsTal.Dato);
         command.Connection = connection;
         command.Connection.Open();
         command.ExecuteNonQuery();
         connection.Close();
     }
 }
 private void spGetSalgsTal(BilletType billet)
 {
     using (SqlConnection connection = new SqlConnection(ConnectionString))
     {
         SqlCommand command = new SqlCommand();
         command.CommandText = "EXECUTE [spGetSalgsTal] @BilletID";
         command.Parameters.AddWithValue("@BilletID", billet.ID);
         command.Connection = connection;
         connection.Open();
         SqlDataReader Reader = command.ExecuteReader();
         if (Reader.HasRows)
         {
             while (Reader.Read())
             {
                 DateTime date = (DateTime)Reader["SalgsDato"];
                 int      sold = (int)Reader["Bevægelse"];
                 SalgsTal tal  = new SalgsTal(date, sold);
                 billet.SamledeSalgsTal.Add(tal);
             }
         }
     }
 }