asp.net use cookies to save user passwords automatically login

asp.net, use cookies to save account password, login automatically ...

Creating cookies

Writing cookies to the client
HttpCookie hcUserName1 = new HttpCookie ("uname"); Create a cookie named uname
Hcusername1.expires = DateTime.Now.AddDays (7); Set the valid time for this cookie
Hcusername1.value = uname; Assign a value to a cookie (that is, the account you want to save, or the password)
HTTPCONTEXT.CURRENT.RESPONSE.COOKIES.ADD (HCUSERNAME1); Submitting cookies

Extract Cookies

if (httpcontext.current.request.cookies["uname"]!= null)//If this uname cookie is not empty
String uname = httpcontext.current.request.cookies["uname"]. Value.tostring (); Extract Cookies

Destroying cookies

Set the cookie time to-1, that is, the cookie expires, destroys
httpcontext.current.response.cookies["Uname"]. Expires = DateTime.Now.AddSeconds (-1);