标签：cookie
今天写个关于http cookie的demo，发现只要vs重新运行后cookie的值就会丢失，代码如下protected void Page_Load(object sender, EventArgs e)
{
HttpCookie _userInfoCookies = Request.Cookies["UserName"];
string city;
if (_userInfoCookies != null)
{
city = _userInfoCookies["City"];
Session["location"] = city;
Response.Redirect("Berava.aspx");
}
}
protected void Moveto_Click(object sender, EventArgs e)
{
Session["location"] = worlddrdolist.SelectedItem.Value;
if (CheckBox1.Checked)
{
HttpCookie _userInfoCookies = new HttpCookie("UserName");
_userInfoCookies["City"] = worlddrdolist.SelectedValue.ToString();
Response.Cookies.Add(_userInfoCookies);
}
Response.Redirect("Berava.aspx");
}最后才发现是因为没有设置cookie的过期时间导致（Expire），默认cookie只是在当前会话有效，所以vs重新运行的时候就是一个新的会话，这时cookie就已经失效了，只要将cookie设置一个过期时间就ok了，像下面这样（有效时间为一天）：_userInfoCookies.Expires = DateTime.Now.AddDays(1);
cookie在vs重新run的时候丢失,布布扣,bubuko.com
标签：cookie
原文地址：http://blog.csdn.net/mx5721/article/details/37873105
