Hi, ganeshkuppuswamy,
Based on my understanding, you want to assign a StyleSheet to a button in a WinForm, don't you?
However, thestyle of buttons in Windows Forms cannot bechanged with a StyleSheet.
StyleSheetsareused todefine styles for html elements.(Or say web forms, like html/aspx/php... )
To change the style in a Windows Form, we usually change its ForeColor, BackColor, BackgroundImage, FlatStyle and Image properties.
And you can check the following URLs to learn more of how to change the view of buttons.
http://www.codeproject.com/vb/net/leadit_flatbutton_control.asp
http://www.codeproject.com/useritems/IE7_style_TravelButton.asp
http://www.codeproject.com/useritems/VistaButton.asp
http://www.codeproject.com/cs/miscctrl/xp-style_button.asp
Hope this helps,
Regards