C HttpClient Cookie verify the solution

Self - implemented cookie validation, remote value example

The following code can be used in conjunction with HttpClient to achieve cross-domain (read and write of cookie)
/ / verification

 
HttpClient httpClient = new HttpClient(url, null, true); 
httpClient.PostingData.Add(key,value);// Login username  
httpClient.PostingData.Add(key,value);// password  
string str = httpClient.GetString(); 

-- write the cookie file serialized back

 
CookieCollection cookies = httpClient.Context.Cookies;// save 1 A global cookie file  
FileStream fileStream = new FileStream("xxx.dat", FileMode.Create); 
BinaryFormatter b = new BinaryFormatter(); 
b.Serialize(fileStream, cookies); 
fileStream.Close(); 

-- read the file deserialize cookies assigned to httpClient by cookies

 
FileStream fileStream = new FileStream("xxx.dat", FileMode.Open, FileAccess.Read, FileShare.Read); 
BinaryFormatter b = new BinaryFormatter(); 
CookieCollection cookies = b.Deserialize(fileStream) as CookieCollection; 
HttpClient httpClient = new HttpClient("url");// The value of url 
httpClient.Context.Cookies = cookies; 
string str = httpClient.GetString();