cookie 经典类

public class CookieHelper
{
public static string get(string CookieName)
{
HttpCookie cookie = HttpContext.Current.Request.Cookies[CookieName];
if (cookie != null)
return cookie.Value;
else
return null;
}
public static string get(string ParentName, string CookieName)
{
HttpCookie cookie = HttpContext.Current.Request.Cookies[ParentName];
if (cookie != null)
return HttpContext.Current.Request.Cookies[ParentName][CookieName];
else
return null;
}

public static void set(string CookieName, string CookieValue, int ExpiresDay)
{
HttpCookie cookie = new HttpCookie(CookieName);
cookie.Value = CookieValue;
if (ExpiresDay > 0)
cookie.Expires = DateTime.Now.AddDays(ExpiresDay);
HttpContext.Current.Response.AppendCookie(cookie);
}
public static void set(string ParentName, string CookieName, string CookieValue, int ExpiresDay)
{
HttpCookie cookie;
if (get(ParentName) == null)
cookie = new HttpCookie(CookieName);
else
cookie = HttpContext.Current.Request.Cookies[ParentName];

cookie.Values[CookieName] = CookieValue;
if (ExpiresDay > 0)
cookie.Expires = DateTime.Now.AddDays(ExpiresDay);
HttpContext.Current.Response.AppendCookie(cookie);
}

public static void remove(string CookieName)
{
System.Web.HttpContext.Current.Response.Cookies[CookieName].Value = null;

}
public static void remove(string ParentName, string CookieName)
{
HttpCookie cookie = HttpContext.Current.Request.Cookies[ParentName];
cookie.Values.Remove(CookieName);
}