protected void Page_Load(object sender, EventArgs e)
{
    fpSpread1.Commandbar.ShowPDFButton = true;
}
protected void FpSpread1_PrintPDF(object sender, FarPoint.Web.Spread.PrintPDFEventArgs e)
{
    e.PdfFileName = "NewPdfFileName.pdf";
}
	 
	
		Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
    FpSpread1.CommandBar.ShowPDFButton = True
End Sub
Protected Sub FpSpread1_PrintPDF(ByVal sender As Object, ByVal e As FarPoint.Web.Spread.PrintPDFEventArgs) Handles FpSpread1.PrintPDF
    e.PdfFileName = "NewPdfFileName.pdf"
End Sub