(Original) cookie Usage Details

This section describes the basic usage of cookies.

1. COOKIE principles

When the client accesses the server for the first time

When the client accesses the server again

2. Create a COOKIE

First, reference the System. Web namespace

 

Code

// Create a COOKIE object
HttpCookie myCookie = new HttpCookie ("UserInfo ");
// Store the COOKIE value
MyCookie ["UserName"] = "UserName ";
MyCookie ["UserSex"] = "UserSex"; // set the domain name myCookie related to this COOKIE. domain = "cnblogs.com"; // set the COOKIE validity period. expires = DateTime. now. addDays (5 );
// Add a COOKIE to the current web Request
Response. Cookie. Add (myCookie );

 

3. Read COOKIE

HttpCookie myCookie = Resquest. Cookie ["UserInfo"];
String userName;
If (myCookie! = Null)
{
UserName = myCookie ["UserName"];
}

 

4. Cancel Cookie

 

HttpCookie myCookie = new HttpCookie ("UserInfo ");
MyCookie. Expires = DateTime. Now. AddDays (-1 );
Response. Cookies. Add (myCookie );

 

5. How to view local cookies

First, set the hidden file to visible.

Open C:/Documents and Settings/current user/Cookies/to view the COOKIE file!