How to remove a persistent cookies before Expiration time ?
How to remove a persistent cookies before Expiration time ?
Cookies are the small pieces of information that are stored in client system or browser memory and helped as client site state management for an web based application. Generally we can have two types of cookiesPersistent Cookies Non Persistent CookiesPersistent Cookies : also known as permanent cookies, which is stored in client hard-drive until it expires . persistent cookies should have set with expiration dates.
Sometimes its stays until the user deletes the cookie. Persistent
cookies are used to collect identifying information about the user from
that system.
Non Persistent Cookies : This can be called as Temporary Cookies. If there is no expires time defined then the cookie is stored in browser memory .
Therefore there is no difference between modifying persistent or non-persistent cookies. Only difference between them are
Persistent cookies should have an Expatriation time defined within it.
Let’s have a quick look how to make cookies as persistent
[sourcecode language="csharp"]
//Creting a Cookie Object
HttpCookie _userInfoCookies = new HttpCookie("UserInfo");
//Setting values inside it
_userInfoCookies["UserName"] = "Abhijit";
_userInfoCookies["UserColor"] = "Red";
_userInfoCookies["Expire"] = "5 Days";
//Adding Expire Time of cookies
_userInfoCookies.Expires = DateTime.Now.AddDays(5);
//Adding cookies to current web response
Response.Cookies.Add(_userInfoCookies);
[/sourcecode]
Now once you have set with the Cookies expires time , it will be stored in hard drive until expires or user manually delete or clear all the cookies. If you want your cookies need to be expires before the expiration time that you have mentioned earlier, you just need to override the cookies information.
[sourcecode language="csharp"]
HttpCookie _userInfoCookies = new HttpCookie("UserInfo");
//Adding Expire Time of cookies before existing cookies time
_userInfoCookies.Expires = DateTime.Now.AddDays(-1);
//Adding cookies to current web response
Response.Cookies.Add(_userInfoCookies);
[/sourcecode]
This will override the existing cookies information.
Sagar S Bhanushali
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