Cookies not getting set in c#

问题

I am using cookies to know whether a page was loaded before or not. So in page load of a asp.net c# page I am using this

if (Request.Cookies["PageLoaded"] == null)
{
   //Initialize things if page loading for first time.
}

and inside the if as last parameter I am setting the cookies value like given below

if (Request.Cookies["PageLoaded"] == null)
{
   //Initialize things if page loading for first time.

   //Set cookies value to indicate page has loaded before
   Response.Cookies["PageLoaded"].Value = "True";
}

When I run in local host its working fine. But when I host it to server for each page load(Postback events) the initial if statement is true(ie cookie is always null) and going inside the loop.

Am I doing something wrong? How can I do this in c#? Thanks

回答1:

Try setting an expiry date for your cookie, by default if you do not set an expiry date for the cookie it will be non-persistant and only stored as part of the Session information so when you close the browser the Cookie will be discarded e.g.

Response.Cookies["PageLoaded"].Value = "True";
Response.Cookies["PageLoaded"].Expires = DateTime.Now.AddDays(1);

来源：https://stackoverflow.com/questions/7399717/cookies-not-getting-set-in-c-sharp