C # knowledge point summary (1)

 

1. When using postbackurl to submit parameters to the target page, you can use the following methods.

Dropdownlist d = (dropdownlist)Previouspage.Findcontrol ("");

 

2. Use of cookies

// Cookie type
Httpcookie = new httpcookie ("mycookie ");
Cookie. Values. Add ("mystate", "123 ");
Cookie. Values. Add ("mystate1", "456 ");
Cookie. expires = datetime. Now. addhours (3 );
Response. Cookies. Add (cookie );

// Obtain the cookie
Httpcookie cookie2 = request. Cookies ["mycookie"];
String myval = cookie2.values ["mystate"];

Note: The browser can only store 20 cookies for the same server, 300 cookies for all servers, and the cookie cannot store 4 kb of data.

 

3. Application ["userdata"]. Generally, users count the number of website users.ProgramToo much data is stored in the status, because the application status needs to occupy server resources until the server is stopped or restarted.

 

ArticleFrom:Hong Shi Internet (http://www.hungstone.cn /)