Operation of Cookies in C #. Net

One, add cookies
1 HttpCookie cookie = new HttpCookie ("Info"); Defines a cookie object and an item named info
2 DateTime dt = DateTime.Now; Defining a Time Object
3 TimeSpan ts=new TimeSpan (1,0,0,0); Cookie effective time, specifically check MSDN
4 cookies. Expires = dt.                 ADD (TS); Add Action Time
5 cookies.          Values.add ("User", "CXBKKK"); Add properties
6 cookies. Values.add ("userid", "1203");
7 Response.appendcookie (cookie); OK write in Cookie

Second, read cookies
1 if (request.cookies["Info"]!=null)/Read cookie

2 {
3 string temp=convert.tostring (request.cookies["Info"). values["User"]) + ";" +convert.tostring (request.cookies["Info"). values["userid"]);
4//Read all with request.cookies["Info"]. Value)
5 if (temp== "")
6 {
7 Response.Write ("Empty");
8}
9 Else
Response.Write (temp);
11}
Or else
13 {
Response.Write ("error");
15}

Third, modify cookies
1 response.cookies["Info" ["user"] = "2"; modifying cookies
2 response.cookies["Info"]. Expires = DateTime.Now.AddDays (1);

Four, delete the property under the cookie
1 HttpCookie acookie=request.cookies["Info"];
2 Acookie.                 Values.remove ("userid"); Delete a property under a cookie
3 Acookie. Expires = DateTime.Now.AddDays (1);
4 Response.Cookies.Add (Acookie);

Five, delete all cookies, that is, set the expiration time is now the line
1 int limit=request.cookies.count-1;
2 for (int i=0;i<limit;i++)
3 {
4 Acookie = Request.Cookies (i)
5 Acookie. Expires = DateTime.Now.AddDays (-1)
6 Response.Cookies.Add (Acookie)
7}