State Management : Cookies create/save GUID

Code Listing: Using GUID to save Globally Unique ID in a Cookie:

HttpCookie cookUserID = new Request.Cookies[“UserID”];

if(cookUserID == null)
cookUserID = new HttpCookie(“UserID”, System.Guid.NewGuid().ToString());

cookUserID.Expires = DateTime.Now.AddDays(30);
Response.Cookies.Add(cookUserID);