protected void btnAddRoomType_Click(object sender, EventArgs e)
        {
            //USes an linq to sql to insert a guest into the guest table
            TreasureLandDataClassesDataContext db = new TreasureLandDataClassesDataContext();
            HotelRoomType type = new HotelRoomType();
            type.HotelID = Convert.ToInt16(ddlHotel.SelectedValue);
            type.RoomType = txtRoomType.Text;
            type.RoomTypeDescription = txtDescription.Text;
            type.RoomTypeRackRate = Convert.ToDecimal(txtRackRate.Text);

            db.HotelRoomTypes.InsertOnSubmit(type);
            db.SubmitChanges();
            gvRoomTpyes.DataBind();
        }
 partial void DeleteHotelRoomType(HotelRoomType instance);
 partial void UpdateHotelRoomType(HotelRoomType instance);
 partial void InsertHotelRoomType(HotelRoomType instance);
		private void detach_HotelRoomTypes(HotelRoomType entity)
		{
			this.SendPropertyChanging();
			entity.Hotel = null;
		}
		private void attach_HotelRoomTypes(HotelRoomType entity)
		{
			this.SendPropertyChanging();
			entity.Hotel = this;
		}