public List <Table> GetAllTables()
        {
            List <Table> tables = new List <Table>();

            foreach (var table in d.GetAllTables())
            {
                Table t = new Table();
                t.TableId    = table.TableId;
                t.Plasace    = table.Plasace;
                t.RationList = d.GetAllRationsOfSpasificTable(table.TableId);
                tables.Add(t);
            }
            return(tables);
        }