?using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using AjaxControlToolkit;
public partial class Rating_Default : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
        {
            if (Session["rating1"] != null)//第一種水果已經(jīng)評價
            {
                ifRating(Rating1, Label1);
            }
            if (Session["rating2"] != null)//第二種水果已經(jīng)評價
            {
                ifRating(Rating2, Label2);
            }
            if (Session["rating3"] != null)//第三種水果已經(jīng)評價
            {
                ifRating(Rating3, Label3);
            }
        }
    }
    //評價第一種水果
    protected void Rating_Changed1(object sender, AjaxControlToolkit.RatingEventArgs e)
    {
        RatingChange(Rating1, Label1, e.Value);
    }
    //評價第二種水果
    protected void Rating_Changed2(object sender, AjaxControlToolkit.RatingEventArgs e)
    {
        RatingChange(Rating2, Label2, e.Value);
    }
    //評價第三種水果
    protected void Rating_Changed3(object sender, AjaxControlToolkit.RatingEventArgs e)
    {
        RatingChange(Rating3, Label3, e.Value);
    }
    //根據(jù)session判斷，對已經(jīng)評價過的，顯示本人的評價結(jié)果，并且不能再次評價
    private void ifRating(Rating r, Label l)
    {
        r.CurrentRating = int.Parse(Session[r.ID].ToString());//顯示評價結(jié)果
        l.Text = Session[r.ID].ToString();
        r.ReadOnly = true;//不能再評價
    }
    //作出評價
    private void RatingChange(Rating r, Label l, string mark)
    {
        Session.Add(r.ID, mark);//session中記錄本次評價，防止多次評價
        r.ReadOnly = true;//不可再評價了
        l.Text = mark;//顯示本次評價的結(jié)果
        RatingRecord rr = new RatingRecord();
        string clas = string.Empty;//被評價的水果的名稱
        switch (r.ID)//獲取被評價的水果的名稱
        {
            case "Rating1": clas = "蘋果"; break;
            case "Rating2": clas = "香蕉"; break;
            case "Rating3": clas = "西紅柿"; break;
        }
        rr.Insert(clas, mark);//記錄下本次評價
    }
    //異步調(diào)用發(fā)生錯誤時調(diào)用
    protected void ScriptManager1_AsyncPostBackError(object sender, AsyncPostBackErrorEventArgs e)
    {
    }
    //查看評價結(jié)果
    protected void Button1_Click(object sender, EventArgs e)
    {
        RatingRecord rr = new RatingRecord();//評價記錄
        string result = string.Empty;//要顯示的字符串
        string format = "{0}: 1星{1}個　2星{2}個　3星{3}個　4星{4}個　5星{5}個<br/>";//格式化字符串
        result += string.Format(format, "蘋　果", rr.Count("蘋果", "1"), rr.Count("蘋果", "2"), rr.Count("蘋果", "3"), rr.Count("蘋果", "4"), rr.Count("蘋果", "5"));
        result += string.Format(format, "西紅柿", rr.Count("西紅柿", "1"), rr.Count("西紅柿", "2"), rr.Count("西紅柿", "3"), rr.Count("西紅柿", "4"), rr.Count("西紅柿", "5"));
        result += string.Format(format, "香　蕉", rr.Count("香蕉", "1"), rr.Count("香蕉", "2"), rr.Count("香蕉", "3"), rr.Count("香蕉", "4"), rr.Count("香蕉", "5"));
        Label temp = (Label)UpdatePanel11.FindControl("Label4");//用于顯示結(jié)果的label
        temp.Text = result;//顯示
    }
}