C#后台获取页面数据

using System;  
using System.Collections.Generic;  
using System.Text;  
using System.Web;  
 
namespace pub.mo  
{  
    public class request  
    {  
        private request() { }  
 
        /// <summary>  
        /// 获取session  
        /// </summary>  
        /// <param name="_session_name"></param>  
        /// <returns></returns>
        public static string session(string _session_name)  
        {  
            object obj = HttpContext.Current.Session[_session_name];  
            return obj == null ? config.empty : obj.ToString();  
        }  
 
        /// <summary>  
        /// 得到Request.QueryString  
        /// </summary>  
        /// <param name="_str"></param>  
        /// <returns></returns>
        public static string querystring(string _str)  
        {  
            string s = HttpContext.Current.Request.QueryString[_str];  
            return s == null ? config.empty : s;  
        }  
 
        /// <summary>  
        /// 得到Request.Form  
        /// </summary>  
        /// <param name="_str"></param>  
        /// <returns></returns>
        public static string form(string _str)  
        {  
            string s = HttpContext.Current.Request.Form[_str];  
            return s == null ? config.empty : s;  
        }  
 
        /// <summary>  
        /// 得到Request.Cookies  
        /// </summary>  
        /// <param name="_str"></param>  
        /// <returns></returns>
        public static string cookies(string _str)  
        {  
            HttpCookie hc = HttpContext.Current.Request.Cookies[_str];  
            return hc == null ? config.empty : hc.Value;  
        }  
 
        /// <summary>  
        /// 获得当前页面的名称  
        /// </summary>  
        /// <returns>当前页面的名称</returns>
        public static string page_name()  
        {  
            string[] urlArr = HttpContext.Current.Request.Url.AbsolutePath.Split('/');  
            return urlArr[urlArr.Length - 1].ToLower();  
        }  
 
        /// <summary>  
        /// 返回表单或Url参数的总个数  
        /// </summary>  
        /// <returns></returns>
        public static int param_count()  
        {  
            return HttpContext.Current.Request.Form.Count + HttpContext.Current.Request.QueryString.Count;  
        }  
 
        /// <summary>  
        /// 得到 Request 的全部  
        /// </summary>  
        /// <param name="_str"></param>  
        /// <returns></returns>
        public static string all(string _str)  
        {  
            string s = HttpContext.Current.Request[_str];  
            return s == null ? config.empty : s;  
        } 
 
        #region 获取id  
        /// <summary>  
        /// 常用 获取ID 默认获取URL id参数 不是数值时返回值为0  
        /// </summary>  
        /// <returns></returns>
        public static int get_id()  
        {  
            return fun.is_id(request.querystring("id"), 0);  
        }  
 
        /// <summary>  
        /// 常用 获取ID 不是数值时返回值为0  
        /// </summary>  
        /// <param name="_str"></param>  
        /// <returns></returns>
        public static int get_id(string _str)  
        {  
            return fun.is_id(request.querystring(_str), 0);  
        }  
 
        /// <summary>  
        /// 常用 获取ID  
        /// </summary>  
        /// <param name="_str"></param>  
        /// <param name="_return">不是数值时返回值</param>  
        /// <returns></returns>
        public static int get_id(string _str, int _return)  
        {  
            return fun.is_id(request.querystring(_str), _return);  
        } 
        #endregion  
 
    }  
}