Hii All Experts,
i am using wss 3.0 and i made some custom webpart to display sharepoint list. And i used Gridview and Treeview control in web part. Now user need export button to export to Exel sheet. i tried by some code but i got error of .css file.
So i am looking for sample code for webpart in c# and for sharepoint. i tried a lot but i got same error "missing css file."..