ASP.NET Cookie Expires值在Response.Redirect上重置？

// 获取当前请求中的Cookie对象
HttpCookie oldCookie = Request.Cookies["MyCookie"];

// 创建一个新的Cookie对象
HttpCookie newCookie = new HttpCookie("MyCookie");

// 将新Cookie对象的属性设置为原始Cookie对象的属性
newCookie.Value = oldCookie.Value;
newCookie.Domain = oldCookie.Domain;
newCookie.Path = oldCookie.Path;
newCookie.Secure = oldCookie.Secure;
newCookie.HttpOnly = oldCookie.HttpOnly;

// 设置新Cookie对象的Expires属性为新的过期时间
newCookie.Expires = DateTime.Now.AddDays(1);

// 将新Cookie对象添加到响应中
Response.Cookies.Add(newCookie);

// 使用Response.Redirect方法进行页面重定向
Response.Redirect("newpage.aspx");