hi,

i am developing a portal i wan the web part to develop like this that when some button click on first web part the second web part get updated with the results . 

i am new to web part and just understand that web part is the way to refereshing or updating a part of the page. 

please also suggest me some example and if any code snippet to achive this.

Hello,

If you want to make some communication with two webparts, we can use  "ConnectionsZone".

Here are some articles about "ConnectionsZone" and examples.

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.webparts.webpartconnection(VS.80).aspx

Webpart is powerful, we can also learn more about it with the link below.

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.webparts.webpart.aspx

Hope it helpful for you.