Display each record in separate (new) page in ASP.Net RDLC report

hello, 

I am using same this data and GridView Filter GridView based on ASP.Net DropDownList selected value using C#.

I want print each page for 1 user

So when i select 5 users and press print

I need print 5 pages each user with full details

<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Button" />
<asp:TextBox ID="txtdate" runat="server"></asp:TextBox>

protected void Button1_Click(object sender, EventArgs e)
{
    DataTable dt = new DataTable();
    dt.Columns.AddRange(new DataColumn[4] {
            new DataColumn("Id"),new DataColumn("name"),new DataColumn("civilid"),new DataColumn("blockrasme")});
    foreach (GridViewRow row in GridView1.Rows)
    {
        if ((row.FindControl("CheckBox1") as CheckBox).Checked)
        {
            string id = (row.FindControl("lblRowNumber0") as Label).Text.Trim();
            string name = (row.FindControl("Labname") as Label).Text.Trim();

            string civilid = (row.FindControl("lLabcivilid") as Label).Text.Trim();

            string blockrasme = (row.FindControl("Labelblockrasme") as Label).Text.Trim();


            dt.Rows.Add(id, name, civilid, blockrasme);
        }
    }


    string url = "/Admin/reportprint.aspx";
    string s = "window.open('" + url +
                "', 'popup_window', 'width=850,height=850,left=100,top=100,resizable=yes');";
    ClientScript.RegisterStartupScript(this.GetType(), "script", s, true);
}