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HttpCookie

System.Web (system.web.dll)sealed class

Use this class to create a client-side cookie. The HttpCookie constructor takes a string representing the name of the cookie. After creating a cookie, you can add information to it in the form of name/value pairs by using the HttpCookieCollection.Add( ) method as follows: objCookies.Values.Add("Name", "John");. Values can be retrieved by using their name with a syntax like strName = objCookies.Values["Name"];.

To send the cookie to the client browser as part of the HTTP response, use the AppendCookie( ) method of the HttpResponse class. This method stores the cookie on the client browser. You can then retrieve a cookie from the HttpResponse class's cookie collection on other pages by using the cookie name, as in Response.Cookies["NameList"]. To ensure compatibility with all browsers, you should not store more than 4096 bytes in a single cookie.

To make a cookie persist between sessions, set the Expires property for the HttpCookie to a date in the future. You can also set the Secure property to True to restrict the cookie to Secure Socket Layer (SSL) transmission. A cookie is much less secure than Application or Session state variables, as information is maintained on the client and transmitted back and forth continuously.

public sealed class HttpCookie {
// Public Constructors
   public HttpCookie(string name);
   public HttpCookie(string name, string value);
// Public Instance Properties
   public string Domain{set; get; }
   public DateTime Expires{set; get; }
   public bool HasKeys{get; }
   public string Name{set; get; }
   public string Path{set; get; }
   public bool Secure{set; get; }
   public string this[string key]{set; get; }
   public string Value{set; get; }
   public NameValueCollection Values{get; }
}

Returned By

HttpCookieCollection.{Get( ), this}, System.Web.Security.FormsAuthentication.GetAuthCookie( )

Passed To

HttpCookieCollection.{Add( ), Set( )}, HttpResponse.{AppendCookie( ), SetCookie( )}

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