cookie在.net中的使用

1.创建一个新的cookie，并赋值。
HttpCookie cookie;
      cookie=new HttpCookie("user");
      cookie.Domain = AppConfig.DomainName;
      cookie.Values.Add("Username",username);
      cookie.Values.Add("ldapStr",FindUserlist.Table.Rows[0]["ldapStr"].ToString());
      Response.AppendCookie(cookie);
2.获取cookie的值
HttpCookie cookie=Request.Cookies["user"];
    if(cookie!=null)
    {
         string username = cookie["Username"];
         string ldapStr = cookie["ldapStr"];
    }
3、写Cookie 值
HttpCookie myCookie = new HttpCookie("CookieName");  
myCookie.Values.Add("CookieItem1","CookieItem1Value");  
myCookie.Values.Add("CookieItem2","CookieItem2Value");  
myCookie.Expires = DateTime.Now.AddDays(30);  
Response.AppendCookie(myCookie);

4、清除Cookie值HttpCookie myCookie = HttpContext.Current.Response.Cookies["CookieObjectName"];  
if(myCookie != null)  
myCookie.Expires = DateTime.Now;