1         public void Delete(string key, string domain)
 2         {
 3             var cook = GetCookie(key);
 4             if (cook != null && cook.Domain == domain)
 5             {
 6                 cook.Expires = DateTime.Now.AddYears(-1);
 7                 this.httpContext.Response.Cookies.Add(cook);
 8             }
 9         }
10 
11 
12  public string Get(string key)
13         {
14             var cook = GetCookie(key);
15 
16             if (cook != null)
17                 return HttpUtility.UrlDecode(cook.Value);
18 
19             return null;
20         }
21 
22         /// <summary>
23         /// 
24         /// </summary>
25         /// <param name="key"></param>
26         /// <returns></returns>
27         HttpCookie GetCookie(string key)
28         {
29             return this.httpContext.Request.Cookies[key];
30         }
31 
32  public void Add(string key, string value, string domain, double expminute)
33         {
34             if (string.IsNullOrWhiteSpace(key))
35                 throw new ArgumentNullException("key");
36             if (string.IsNullOrWhiteSpace(value))
37                 throw new ArgumentNullException("value");
38 
39             var cookie = this.GetCookie(key);
40             if (cookie == null)
41                 cookie = new HttpCookie(key);
42 
43             lock (objLocker)
44             {
45                 cookie.Expires = DateTime.Now.AddMinutes(expminute <= 0 ? Variables.COOKIEMINUTE : expminute);
46                 if (!string.IsNullOrWhiteSpace(domain))
47                     cookie.Domain = domain;
48 
49                 cookie.Value = HttpUtility.UrlEncode(value);
50 
51                 this.httpContext.Response.Cookies.Add(cookie);
52             }
53         }