CookieContainer obtained through COM, which is simple and easy to use.

Recently I am working on a small software program that implements login and automatic sending of information through HttpWebRequest. Although it has not yet been implemented, today I have seen a good way to get CookieContainer from a foreign website, share it out. I have seen the least code and it is very good.

 

1 using System;
2 using System. Runtime. InteropServices;
3 using System. Text;
4 using System. Net;
5
6 namespace NExplus. NSiter
7 {
8/** // <summary>
9 // method class for obtaining cookies.
10 /// </summary>
11 public class CookieManger
12 {
13/** // <summary>
14 // obtain Cookie data through COM.
15 /// </summary>
16 /// <param name = "url"> current url. </Param>
17 /// <param name = "cookieName"> CookieName. </param>
18 // <param name = "cookieData"> the <see cref = "StringBuilder"/> instance used to save Cookie Data. </Param>
19 /// <param name = "size"> Cookie size. </Param>
20 /// <returns> If the call succeeds, <c> true </c> is returned. Otherwise, <c> false </c> is returned. </Returns>
21 [DllImport ("wininet. dll", SetLastError = true)]
22 public static extern bool InternetGetCookie (
23 string url, string cookieName,
24 StringBuilder cookieData, ref int size );
25/*** // <summary>
26 // obtain the current <see cref = "Uri"/> <see cref = "CookieContainer"/> instance.
27 /// </summary>
28 // <param name = "uri"> current <see cref = "Uri"/> address. </Param>
29 // <returns> current <see cref = "Uri"/> <see cref = "CookieContainer"/> instance. </Returns>
30 public static CookieContainer GetUriCookieContainer (Uri uri ){
31 CookieContainer cookies = null;
32
33 // define the Cookie data size.
34 int datasize = 256;
35 StringBuilder cookieData = new StringBuilder (datasize );
36
37 if (! InternetGetCookie (uri. ToString (), null, cookieData,
38 ref datasize )){
39 if (datasize <0)
40 return null;
41
42 // make sure there is enough space to hold Cookie data.
43 cookieData = new StringBuilder (datasize );
44 if (! InternetGetCookie (uri. ToString (), null, cookieData,
45 ref datasize ))
46 return null;
47}
48
49
50 if (cookieData. Length> 0 ){
51 cookies = new CookieContainer ();
52 cookies. SetCookies (uri, cookieData. ToString (). Replace (';',','));
53}
54 return cookies;
55}
56
57}
58}

 

 

Or another method

 

// Add this to store Cookies directly.
HttpWebRequest myHttpWebRequest = WebRequest. Create (url) as HttpWebRequest;
MyHttpWebRequest. ContentType = "application/x-www-form-urlencoded ";
MyHttpWebRequest. Method = "GET ";
MyHttpWebRequest. Timeout = 60*1000;
If (myCookieContainer = null)
{
MyCookieContainer = new CookieContainer ();
}
MyHttpWebRequest. CookieContainer = myCookieContainer;

/// <Summary>
/// Set to retrieve page Session/Cookies
/// </Summary>
Private CookieContainer MyCookieContainer
{
Set {myCookieContainer = value ;}
Get {return myCookieContainer ;}
}

// In fact, you must use Com