Mini Kabibi Habibi

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using DevExpress.Web.ASPxGridView;
using DevExpress.Web.Data;
using DevExpress.Web.ASPxClasses;
using System.Text;
using System.Drawing;
using System.Collections;

public partial class Results : System.Web.UI.Page
{
    protected void Page_Init(object sender, EventArgs e) {
        if(Data.Instance.CurrentQuery == null)
            Response.Redirect("Default.aspx");
        
        divSearchIsNotAvailable.Visible = Data.Instance.CurrentQuery.IsSearch;
        filterPanel.Visible = !Data.Instance.CurrentQuery.IsSearch;
        gvResults.Visible = !Data.Instance.CurrentQuery.IsSearch;

        Utils.SetDefaultDateEditValues(deCheckIn, deCheckOut);
        if(Data.Instance.CurrentQuery.IsSearch)
            Data.Instance.CurrentQuery.IsSearch = false;
    }
    protected void Page_Load(object sender, EventArgs e) {
        InitEditorsValues();
        LoadGridData();
    }
    protected void deCheckIn_Validation(object sender, DevExpress.Web.ASPxEditors.ValidationEventArgs e) {
        Utils.ValidateCheckInDate(e);
    }
    protected void deCheckOut_Validation(object sender, DevExpress.Web.ASPxEditors.ValidationEventArgs e) {
        Utils.ValidateCheckOutDate((DateTime)deCheckIn.Value, e);
    }
    protected void btnRefresh_Click(object sender, EventArgs e) {
        InitializeSearchQuery();
        LoadGridData();
    }
    protected void cmbCity_Callback(object source, CallbackEventArgsBase e) {
        string country = e.Parameter;
        if(string.IsNullOrEmpty(country)) return;
        cmbCity.DataSource = Data.Instance.Countries.Find(c => c.Name == country).Cities;
        cmbCity.DataBind();
    }
    protected string GetHotelPrice(GridViewDataItemTemplateContainer container) {
        Hotel hotel = GetHotel(container);
        if(hotel.MinPrice == hotel.MaxPrice)
            return string.Format("${0}", hotel.MinPrice);
        return string.Format("${0} - ${1}", hotel.MinPrice, hotel.MaxPrice);
    }
    protected string GetOrderUrl(GridViewDataItemTemplateContainer container) {
        return Utils.GetOrderFormUrl(GetHotel(container));
    }
    protected string GetHotelImageUrl(int index) {
        return Utils.GetImageUrl(((Hotel)gvResults.GetRow(index)).ImageUrl, Utils.GridImageSize);
    }
    protected string GetHotelDescription(int index) {
        return ((Hotel)gvResults.GetRow(index)).Description;
    }
    protected string GetPreviewHotelImageUrl(int index) {
        return Utils.GetImageUrl(((Hotel)gvResults.GetRow(index)).ImageUrl, Utils.PopupImageSize);
    }
    protected string GetExpandButtonFunction(int index) {
        return gvResults.DetailRows.IsVisible(index) ? "gvHideDetails" : "gvShowDetails";
    }
    protected string GetExpandButtonTitle(int index) {
        return gvResults.DetailRows.IsVisible(index) ? "Hide details" : "Show details";
    }
    protected string GetExpandedBoldClass(int index) {
        return gvResults.DetailRows.IsVisible(index) ? "bold" : "";
    }

    void InitEditorsValues() {
        ccbHotelServices.DataSource = Data.Instance.HotelServices;
        ccbHotelServices.DataBind();
        ccbHotestars.DataSource = Data.Instance.HotelStars;
        ccbHotestars.DataBind();
        ccbRoomServices.DataSource = Data.Instance.RoomServices;
        ccbRoomServices.DataBind();
        cmbRoomType.DataSource = Data.Instance.RoomTypes;
        cmbRoomType.DataBind();
        cmbCountry.DataSource = Data.Instance.Countries;
        cmbCountry.DataBind();

        SearchQuery query = Data.Instance.CurrentQuery;
        if(!IsPostBack) {
            if(!string.IsNullOrEmpty(query.Country)) {
                cmbCountry.Value = query.Country;
                cmbCity.DataSource = Data.Instance.Countries.Find(c => c.Name == query.Country).Cities;
                cmbCity.DataBind();
            }
            if(!string.IsNullOrEmpty(query.City))
                cmbCity.Value = query.City;

            deCheckIn.Value = query.FromDate ?? deCheckIn.Value;
            deCheckOut.Value = query.ToDate ?? deCheckOut.Value;
            seMinPrice.Value = query.MinPrice;
            seMaxPrice.Value = query.MaxPrice;
            cmbRoomType.Value = query.RoomType;
            seAdults.Value = query.Adults;
            seChildren.Value = query.Children;
            ccbHotelServices.Values = query.HotelServices;
            ccbHotestars.ValueType = typeof(int);
            ccbHotestars.Values = query.Stars;
            ccbRoomServices.Values = query.RoomServices;
        }
    }
    void LoadGridData() {
        gvResults.DataSource = Data.Instance.GetSearchResults();
        gvResults.DataBind();
    }
    Hotel GetHotel(GridViewDataItemTemplateContainer container) {
        return container.Grid.GetRow(container.VisibleIndex) as Hotel;
    }
    void InitializeSearchQuery() {
        Data.Instance.CurrentQuery = new SearchQuery() {
            Country = (string)cmbCountry.Value,
            City = (string)cmbCity.Value,
            MaxPrice = seMaxPrice.Value == null ? 0 : (decimal)seMaxPrice.Value,
            MinPrice = seMinPrice.Value == null ? 0 : (decimal)seMinPrice.Value,
            FromDate = (DateTime)deCheckIn.Value,
            ToDate = (DateTime)deCheckOut.Value,
            RoomType = (string)cmbRoomType.Value,
            Adults = Convert.ToInt32(seAdults.Value),
            Children = Convert.ToInt32(seChildren.Value),
            Stars = ccbHotestars.Values.Cast<int>().ToArray(),
            HotelServices = ccbHotelServices.Values.Cast<string>().ToArray(),
            RoomServices = ccbRoomServices.Values.Cast<string>().ToArray()
        };
    }
}