private void populatePatientRooms()
        {
            Stack <PatientRoom> rooms = DbAdapter.getPatientRooms();

            this.roomsTable = new DataTable();
            this.roomsTable.Columns.Add(new DataColumn("Numer sali"));
            this.roomsTable.Columns.Add(new DataColumn("Oddział"));
            this.roomsTable.Columns.Add(new DataColumn("Budynek"));
            this.roomsTable.Columns.Add(new DataColumn("Sprzęt"));


            foreach (var room in rooms)
            {
                roomsTable.Rows.Add(
                    room.room_number,
                    room.department,
                    room.building,
                    null
                    );
            }

            // Filter table with data



            dataGridViewPatientRooms.DataSource          = this.roomsTable;
            dataGridViewPatientRooms.ReadOnly            = true;
            dataGridViewPatientRooms.AutoGenerateColumns = true;
            dataGridViewPatientRooms.AutoResizeColumns();
            dataGridViewPatientRooms.Refresh();
        }