@Mudassar
thankyou for the reply sir.
I used below javascript code by manually adding "Print" button and its working fine:
<body>
<form id="form1" runat="server">
<script type="text/javascript">
function doPrint() {
var prtContent = document.getElementById('<%= ReportViewer1.ClientID %>');
prtContent.border = 0; //set no border here
var WinPrint = window.open('', '', 'left=150,top=100,width=1000,height=1000,toolbar=0,scrollbars=1,status=0,resizable=1');
WinPrint.document.write(prtContent.outerHTML);
WinPrint.document.close();
WinPrint.focus();
WinPrint.print();
WinPrint.close();
}
</script>
<asp:Button ID="PrintButton" runat="server" Text="Print" OnClientClick="doPrint();" ToolTip="Print Report"/>
</body>