thnx,but if ay one plz do it in sql

Thnx its working perfect kindly tell me is this good approach or theres any other method to do this? second how can show message as i m usng sqldatasource(GridView) to update and delete

thnx alot

well, I suggest u to use a hardlock. if so u can store the information of expiration and etc. in it, else u should store those information in a hidden path in a encrypted file this post is really useful: Application Trial Maker good luck

Windows controls appereance by default depends on selected theme in windows.You can avoid it by creating your own theme independant styles for each of them.Similar job has already been done for MFC here at cp ^. Life is a stage and we are all actors!

I think this is a windows forms. The article corresponds only to ASP.Net.

Maybe, but maybe not: In the cellular phone industry, mobile phones and their networks sometimes support concatenated short message service (or concatenated SMS) :laugh: A guide to posting questions on CodeProject[^] Dave Kreskowiak Microsoft MVP Visual Developer - Visual Basic      2006, 2007, 2008 But no longer in 2009...