有一个类看不懂？？？请解释一些，谢谢！！！

Question

public string No 
        { 
            get 
            { 
                try 
                { 
                    HttpCookie No = new HttpCookie("No"); 
                    No = this._page.Request.Cookies["No"]; 
                    return HttpUtility.UrlDecode(No.Value); 
                } 
                catch 
                { 
                    return ""; 
                } 
            } 
            set 
            { 
                HttpCookie No = new HttpCookie("No", HttpUtility.UrlEncodeUnicode(value)); 
                this._page.Response.Cookies.Add(No); 
            } 
        }
这个不时类
是属性
一个名字叫No的string属性

Answer 1

一个叫No的属性，它的值保存在Cookies里面

Answer 2

这个不是类 
是属性 
一个名字叫No的string属性

Answer 3

把Cookies封装了的类而已。里面有一个No属性。

Answer 4

是一个属性。代码没有贴全。 
public class Cookie
    {
        private Page _page;
        private string _purview;
        public Cookie(Page page)
        {
            //
            // TODO: 在此处添加构造函数逻辑
            //
            this._page = page;
            this._purview += this.PurviewOpProjectManage ? "1," : "0,";
            this._purview += this.PurviewOpProjectView ? "1," : "0,";
            this._purview += this.PurviewOpLogViewLowerDep ? "1," : "0,";
            this._purview += this.PurviewOpLogViewSameDep ? "1," : "0,";
            //20060705
            //this._purview += this.PurviewOpLogQueryLowerDep ? "1," : "0,";
            //this._purview += this.PurviewOpLogQuerySameDep ? "1," : "0,";
            //20060705
            this._purview += this.PurviewOpUserManage ? "1," : "0,";
            this._purview += this.PurviewOpUserView ? "1," : "0,";
            this._purview += this.PurviewOpUserPurview ? "1," : "0,";
            this._purview += this.PurviewOpDepartmentManage ? "1," : "0,";
            this._purview += this.PurviewOpDepartmentView ? "1," : "0,";
            this._purview += this.PurviewOpNotifyManage ? "1," : "0,";
            this._purview += this.PurviewOpDocumentFolderManage ? "1," : "0,";
            this._purview += this.PurviewOpDocumentDocManage ? "1," : "0,";
            this._purview += this.PurviewOpDocumentDocDownAll ? "1," : "0,";
            this._purview = this._purview.Substring(0, this._purview.Length - 1);
        }
        public Cookie()
        {
            this._page = new Page();
        }public string No
        {
            get
            {
                try
                {
                    HttpCookie No = new HttpCookie("No");  //这里看不懂，谢谢
                    No = this._page.Request.Cookies["No"];  //这里看不懂，谢谢
                    return HttpUtility.UrlDecode(No.Value);//这里看不懂，谢谢
                }
                catch
                {
                    return "";
                }
            }
            set
            {
//这里看不懂，谢谢
         HttpCookie No = new HttpCookie("No", HttpUtility.UrlEncodeUnicode(value));
         this._page.Response.Cookies.Add(No);
            }
        }