Visual Studio Tools for Office
Hi Dipali,
You'll need to provide further details in order for someone to help. For example, post the code that causes the error to occur. Additionally, if you're not using VSTO to do this, you might have better luck on another forum. See some of the Access links on this page: http://forums.microsoft.com/MSDN/ShowPost.aspx PostID=174275&SiteID=1
Regards,
Steve