pass “calendar.selectedvalue” in querystring from gridview

<asp:HyperLinkField DataNavigateUrlFields="LocalIP"
                DataNavigateUrlFormatString="DailyResults.aspx?
           Terms={0}&column=LocalIP&
               startdate=Calendar1.SelectedDate.Date.Date.ToShortDateString()
                DataTextField="LocalIP" HeaderText="User" />

protected override gv1_RowDataBound(object sender, GridViewRowEventArgs e)
{
  HyperLink hl = new Hyperlink();
  hl.NavigateUrl = string.Format("DailyResults.aspx?Terms={0}&column=LocalIP&startdate={1}", localIp, Calendar1.SelectedDate.Date.Date.ToShortDateString());
  .. set other hyperlink fields ..
  e.Row.Cells[1].Controls.Add(hl);
}

<asp:HyperLinkField DataNavigateUrlFormatString="<%=GetSelectedDate()%>....

<asp:HyperLinkField DataNavigateUrlFields="LocalIP"
     DataNavigateUrlFormatString='<%# "DailyResults.aspx?Terms={0}&column=LocalIP&startdate=" + Calendar1.SelectedDate.Date.Date.ToShortDateString() %> DataTextField="LocalIP" HeaderText="User" />