操作cookie和QueryString 的类

using System;
using System.Web;
namespace admin
{
    /**//// <summary>
    /// Utility 的摘要说明。
    /// </summary>
    public class Utility
    {
        public Utility()
        {
            //
            // TODO: 在此处添加构造函数逻辑
            //
        }
        public static string GetRequestString(HttpRequest req,string val)
        {
            string[] arr = req.QueryString.GetValues(val);
            if(arr == null)
                arr = req.Form.GetValues(val);
            if(arr != null)
                return arr[0];
            else
                return null;
        }
        public static int GetRequestInt(HttpRequest req,string val)
        {
            string[] arr = req.QueryString.GetValues(val);
            if(arr == null)
                arr = req.Form.GetValues(val);
            if(arr != null)
                return StringToInt(arr[0]);
            else
                return 0;
        }
        public static string GetCookiesString(HttpRequest req,string CookiesName)
        {
            if(req.Cookies[CookiesName] != null)
                return req.Cookies[CookiesName].Value;
            else
                return null;
        }
        public static int GetCookiesInt(HttpRequest req,string CookiesName)
        {
            if(req.Cookies[CookiesName] != null)
                return StringToInt(req.Cookies[CookiesName].Value);
            else
                return 0;
        }
        public static bool SetCookies(HttpResponse res,string  cookname,int cookval)
        {
            
            try
            {
                HttpCookie cook = new HttpCookie(cookname,cookval.ToString());
                res.Cookies.Add(cook);
                return true;
            }
            catch
            {
                return false;
            }
        }
        public static bool SetCookies(HttpResponse res,string  cookname,string cookval)
        {
            
            try
            {
                HttpCookie cook = new HttpCookie(cookname,cookval);
                res.Cookies.Add(cook);
                return true;
            }
            catch
            {
                return false;
            }
        }
        private static int StringToInt(string val)
        {
            try
            {
                return Int32.Parse(val);
            }
            catch
            {
                return 0;
            }
        }
    }
}