C# WebHelper-CookieHelper，CacheHelper，SessionHelper

常用web操作工具类，记录一下，本文记录的工具类，都要求引用 System.Web

1、CookieHelper

 /// <summary>
     /// Cookie工具类
     /// </summary>
     public class CookieHelper
     {
         /// <summary>
         /// 清除指定Cookie
         /// </summary>
         /// <param name="cookiename">cookiename</param>
         public static void ClearCookie(string cookiename)
         {
             HttpCookie cookie = HttpContext.Current.Request.Cookies[cookiename];
             if (cookie != null)
             {
                 cookie.Expires = DateTime.Now.AddYears(-);
                 HttpContext.Current.Response.Cookies.Add(cookie);
             }
         }
         /// <summary>
         /// 获取指定Cookie值
         /// </summary>
         /// <param name="cookiename">cookiename</param>
         /// <returns></returns>
         public static string GetCookieValue(string cookiename)
         {
             HttpCookie cookie = HttpContext.Current.Request.Cookies[cookiename];
             string str = string.Empty;
             if (cookie != null)
             {
                 str = cookie.Value;
             }
             return str;
         }
         /// <summary>
         /// 添加一个Cookie（24小时过期）
         /// </summary>
         /// <param name="cookiename"></param>
         /// <param name="cookievalue"></param>
         public static void SetCookie(string cookiename, string cookievalue)
         {
             SetCookie(cookiename, cookievalue, DateTime.Now.AddDays(1.0));
         }
         /// <summary>
         /// 添加一个Cookie
         /// </summary>
         /// <param name="cookiename">cookie名</param>
         /// <param name="cookievalue">cookie值</param>
         /// <param name="expires">过期时间 DateTime</param>
         public static void SetCookie(string cookiename, string cookievalue, DateTime expires)
         {
             HttpCookie cookie = new HttpCookie(cookiename)
             {
                 Value = cookievalue,
                 Expires = expires
             };
             HttpContext.Current.Response.Cookies.Add(cookie);
         }
     }

CookieHelper

2、SessionHelper

 /// <summary>
     /// Session 操作类
     /// </summary>
     public class SessionHelper
     {
         /// <summary>
         /// 根据session名获取session对象
         /// </summary>
         /// <param name="name">session 名</param>
         /// <returns></returns>
         public static object GetSession(string name)
         {
             return HttpContext.Current.Session[name];
         }
         /// <summary>
         /// 设置session
         /// </summary>
         /// <param name="name">session 名</param>
         /// <param name="val">session 值</param>
         public static void SetSession(string name, object val)
         {
             HttpContext.Current.Session.Remove(name);
             HttpContext.Current.Session.Add(name, val);
         }
         /// <summary>
         /// 添加Session，调动有效期为20分钟
         /// </summary>
         /// <param name="strSessionName">Session对象名称</param>
         /// <param name="strValue">Session值</param>
         public static void Add(string strSessionName, string strValue)
         {
             HttpContext.Current.Session[strSessionName] = strValue;
             HttpContext.Current.Session.Timeout = ;
         }

         /// <summary>
         /// 添加Session，调动有效期为20分钟
         /// </summary>
         /// <param name="strSessionName">Session对象名称</param>
         /// <param name="strValues">Session值数组</param>
         public static void Adds(string strSessionName, string[] strValues)
         {
             HttpContext.Current.Session[strSessionName] = strValues;
             HttpContext.Current.Session.Timeout = ;
         }

         /// <summary>
         /// 添加Session
         /// </summary>
         /// <param name="strSessionName">Session对象名称</param>
         /// <param name="strValue">Session值</param>
         /// <param name="iExpires">调动有效期（分钟）</param>
         public static void Add(string strSessionName, string strValue, int iExpires)
         {
             HttpContext.Current.Session[strSessionName] = strValue;
             HttpContext.Current.Session.Timeout = iExpires;
         }

         /// <summary>
         /// 添加Session
         /// </summary>
         /// <param name="strSessionName">Session对象名称</param>
         /// <param name="strValues">Session值数组</param>
         /// <param name="iExpires">调动有效期（分钟）</param>
         public static void Adds(string strSessionName, string[] strValues, int iExpires)
         {
             HttpContext.Current.Session[strSessionName] = strValues;
             HttpContext.Current.Session.Timeout = iExpires;
         }

         /// <summary>
         /// 读取某个Session对象值
         /// </summary>
         /// <param name="strSessionName">Session对象名称</param>
         /// <returns>Session对象值</returns>
         public static object Get(string strSessionName)
         {
             if (HttpContext.Current.Session[strSessionName] == null)
             {
                 return null;
             }
             else
             {
                 return HttpContext.Current.Session[strSessionName];
             }
         }

         /// <summary>
         /// 读取某个Session对象值数组
         /// </summary>
         /// <param name="strSessionName">Session对象名称</param>
         /// <returns>Session对象值数组</returns>
         public static string[] Gets(string strSessionName)
         {
             if (HttpContext.Current.Session[strSessionName] == null)
             {
                 return null;
             }
             else
             {
                 return (string[])HttpContext.Current.Session[strSessionName];
             }
         }

         /// <summary>
         /// 删除某个Session对象
         /// </summary>
         /// <param name="strSessionName">Session对象名称</param>
         public static void Del(string strSessionName)
         {
             HttpContext.Current.Session[strSessionName] = null;
         }
     }

SessionHelper

3、CacheHelper

 /// <summary>
     /// 缓存辅助类
     /// </summary>
     public class CacheHelper
     {
         /// <summary>
         /// 获取数据缓存
         /// </summary>
         /// <param name="CacheKey">键</param>
         public static object GetCache(string CacheKey)
         {
             System.Web.Caching.Cache objCache = HttpRuntime.Cache;
             return objCache[CacheKey];
         }

         /// <summary>
         /// 设置数据缓存
         /// </summary>
         public static void SetCache(string CacheKey, object objObject)
         {
             System.Web.Caching.Cache objCache = HttpRuntime.Cache;
             objCache.Insert(CacheKey, objObject);
         }

         /// <summary>
         /// 设置数据缓存
         /// </summary>
         public static void SetCache(string CacheKey, object objObject, TimeSpan Timeout)
         {
             System.Web.Caching.Cache objCache = HttpRuntime.Cache;
             objCache.Insert(CacheKey, objObject, null, DateTime.MaxValue, Timeout, System.Web.Caching.CacheItemPriority.NotRemovable, null);
         }

         /// <summary>
         /// 设置数据缓存
         /// </summary>
         public static void SetCache(string CacheKey, object objObject, DateTime absoluteExpiration, TimeSpan slidingExpiration)
         {
             System.Web.Caching.Cache objCache = HttpRuntime.Cache;
             objCache.Insert(CacheKey, objObject, null, absoluteExpiration, slidingExpiration);
         }

         /// <summary>
         /// 移除指定数据缓存
         /// </summary>
         public static void RemoveAllCache(string CacheKey)
         {
             System.Web.Caching.Cache _cache = HttpRuntime.Cache;
             _cache.Remove(CacheKey);
         }

         /// <summary>
         /// 移除全部缓存
         /// </summary>
         public static void RemoveAllCache()
         {
             System.Web.Caching.Cache _cache = HttpRuntime.Cache;
             IDictionaryEnumerator CacheEnum = _cache.GetEnumerator();
             while (CacheEnum.MoveNext())
             {
                 _cache.Remove(CacheEnum.Key.ToString());
             }
         }
     }

CacheHelper