How to create and write to a browser cookie in ASP.NET using C#

1- Go to the code-behind of the .aspx page you wish to create the browser cookie from. I will show 2 approaches on creating such a cookie.
2- Method 1:

// A cookie called "userInfo" is dynamically created and the key "userName" is assigned the value "patrick".
Response.Cookies["userInfo"]["userName"] = "patrick";
// A new key called "lastVisit" is added to the collection of values in the cookie and assigned the current datetime value.
Response.Cookies["userInfo"]["lastVisit"] = DateTime.Now.ToString();
// The expiration value of the cookie is set to 1 day in the future from the current date.
Response.Cookies["userInfo"].Expires = DateTime.Now.AddDays(1);
3- Method 2:

HttpCookie aCookie = new HttpCookie("userInfo");
// The key "userName" is added to the cookie and assigned the value "patrick" as the above example.
aCookie.Values["userName"] = "patrick";
// The key "lastVisit" is added to the cookie and assigned the current datetime value.
aCookie.Values["lastVisit"] = DateTime.Now.ToString();
// The expiration date of the cookie is set to 1 day in the future from the current date.
aCookie.Expires = DateTime.Now.AddDays(1);
// Add the cookie to the browser cookie collection.
Response.Cookies.Add(aCookie);