C# - Open Page In New Window When A Link Button Is Clicked

I was trying to open a new window when a link button is clicked.

<asp:LinkButton ID="lnkpackageinfo" CssClass="linkclass"
runat="Server"
OnClientClick="lnkpackageinfo_Click()">Compare Packages</asp:LinkButton>

I want the target page to be given in the code behind because in the target page i want to use querystring to hide few buttons and links. It is clear

protected void lnkpackageinfo_Click(object sender, EventArgs e)
{
long MerchantID = CommonHelper.GetLoggedInMerchant();
string querystringpackageinfo = ApplicationData.URL_MERCHANT_COMPANY_PACKAGE + "?MerchantCompanyPayment";
Response.Redirect(querystringpackageinfo, false);
}