how to redirect another page

if you want to open it in new window use the javascript
in following example i have open new window on submit click

write a javascript function

<script type="text/javascript">
function open_wind()
{
    window.open("TankerPositionPreview.aspx")
   return false;
}
</script>

call this function on onclientclick

<asp:button id="btnOne" runat="server" value="submit" onclientclick="return open_wind()" xmlns:asp="#unknown"></asp:button>

you can take simple html button like this...

<input type="button" id="buttest"  runat="server" value="open" />

then go to cs file add below code into load event that will open new window and page will redirect to the another page with the query string value.

buttest.Attributes.Add("onclick", "window.open('TankerPositionPreview.aspx?Preview=" + value + "')");

Response.Redirect does not open in a new window. The second parameter to Response.Redirect doesnot say the compiler to open it in a new window. it only says whether to execute the remaining code in the current page before redirecting to the target page.

Use this code

Responce.Redirect="Select the page url"

Response.Redirect("~/PageName.aspx");